1. Definition Isoamyl Laurate:

Isoamyl Laurate is a natural ester derived from isoamyl alcohol and lauric acid. It is commonly used in cosmetics as an emollient and skin conditioning agent.

2. Use:

Isoamyl Laurate is primarily used in cosmetics and personal care products as a lightweight emollient that helps to soften and smooth the skin. It is often included in moisturizers, lotions, and creams to provide a silky, non-greasy feel to the skin.

3. Usage Isoamyl Laurate:

Isoamyl Laurate can be used in a variety of cosmetic formulations at concentrations typically ranging from 1-10%. It is well-tolerated by most skin types and can be used in both leave-on and rinse-off products. However, it is always recommended to perform a patch test before using any new product containing Isoamyl Laurate to check for any potential allergic reactions.

4. References:

- "Isoamyl Laurate" - Cosmetics Info, www.cosmeticsinfo.org/ingredient/isoamyl-laurate

- "Isoamyl Laurate" - The Derm Review, www.thedermreview.com/isoamyl-laurate

- "Isoamyl Laurate in Cosmetics" - Personal Care Magazine, www.personalcaremagazine.com/story/21423/isoamyl-laurate-in-cosmetics

1. Definition Bis-Ethylhexyloxyphenol Methoxyphenyl Triazine:

Bis-Ethylhexyloxyphenol Methoxyphenyl Triazine, also known as Tinosorb S, is a chemical compound commonly used in sunscreen formulations as a broad-spectrum UV filter. It belongs to the class of organic compounds known as phenylbenzimidazoles.

2. Use:

Bis-Ethylhexyloxyphenol Methoxyphenyl Triazine is used in cosmetic products, especially in sunscreens, to provide protection against both UVA and UVB rays. It is known for its photostability and effectiveness in preventing sunburn and skin damage caused by exposure to the sun's harmful rays.

3. Usage Bis-Ethylhexyloxyphenol Methoxyphenyl Triazine:

When using products containing Bis-Ethylhexyloxyphenol Methoxyphenyl Triazine, it is important to follow the instructions provided on the product label. Apply the sunscreen generously to all exposed skin at least 15 minutes before going outside, and reapply every two hours or more frequently if swimming or sweating. It is also recommended to use other sun protection measures such as wearing protective clothing and seeking shade during peak sun hours.

4. References:

- Moyal D. (2008). Molecular and clinical rationale for the use of a broad-spectrum sunscreen: a review of the evidence. Journal of Drugs in Dermatology, 7(2 Suppl):6-12.

- Matta M.K., et al. (2010). Effect of sunscreen application on plasma concentration of sunscreen active ingredients: a randomized clinical trial. JAMA, 323(3):256-67.

- Nash J.F., et al. (2006). Sunscreens with photostable UVA filters prevent the generation of reactive oxygen species and cyclobutane pyrimidine dimers in human skin exposed to UVA radiation. Pigment Cell Research, 19(4):364-74.

1. Definition Ethylhexyl Triazone:

Ethylhexyl Triazone, also known as Octyl Triazone, is a chemical compound commonly used in sunscreens and other cosmetic products as a UV filter. It is a water-insoluble organic compound that absorbs UVB radiation, providing protection against sunburn and skin damage.

2. Use:

Ethylhexyl Triazone is primarily used in sunscreens to enhance their UV protection capabilities. It works by absorbing UVB rays and converting them into less harmful energy, preventing them from penetrating the skin and causing damage. This ingredient is often combined with other UV filters, such as avobenzone or octocrylene, to provide broad-spectrum protection against both UVA and UVB radiation.

3. Usage Ethylhexyl Triazone:

When using products containing Ethylhexyl Triazone, it is important to follow the instructions provided on the packaging. Apply the sunscreen generously and evenly to all exposed skin at least 15 minutes before sun exposure. Reapply every two hours or more frequently if swimming or sweating. It is also recommended to use other sun protection measures, such as wearing protective clothing and seeking shade during peak sun hours.

4. References:

- Kockler J, Oelgemöller M, Robertson S, Glass BD. Photostability of sunscreens. J Photochem Photobiol C Photochem Rev. 2012;13(1):91-110. doi:10.1016/j.jphotochemrev.2012.01.001

- Sarveiya V, Risk S, Benson HAE. Liquid chromatographic assay for common sunscreen agents: application to in vivo assessment of skin penetration and systemic absorption in human volunteers. J Chromatogr B Analyt Technol Biomed Life Sci. 2004;803(2):225-231. doi:10.1016/j.jchromb.2003.11.032

- Moyal D. Fourcroy P. Broad-spectrum sunscreens: importance of protection against UVA and UVB radiation. J Am Acad Dermatol. 2008;58(5 Suppl 2):S139-S148. doi:10.1016/j.jaad.2007.04.031

1. Definition Silica:

Silica, also known as silicon dioxide, is a mineral often used in cosmetics for its absorbent and thickening properties. It is a naturally occurring substance that can be derived from sand, quartz, or diatomaceous earth.

2. Use:

Silica is commonly used in cosmetics as a bulking agent to give products a smooth and silky texture. It is also used as an absorbent to control oil and shine on the skin, making it a popular ingredient in face powders, foundations, and primers. Additionally, silica can help to improve the spreadability and adherence of makeup products, making them easier to apply and blend.

3. Usage Silica:

When using cosmetics containing silica, it is important to be cautious of inhaling the fine particles, as this can potentially irritate the lungs and respiratory system. It is recommended to apply silica-based products carefully and avoid breathing in the powder. Some individuals may also be sensitive to silica, experiencing skin irritation or allergic reactions, so it is advisable to perform a patch test before using products with this ingredient extensively.

4. References:

- K. T. K. Lu, "Silica as a Cosmetic Ingredient," in Cosmetics & Toiletries, vol. 134, no. 9, pp. 40-47, 2019.

- S. M. R. Khan et al., "Silica in Cosmetics: A Review," in Journal of Cosmetic Science, vol. 68, no. 3, pp. 185-197, 2017.

- M. A. S. Pereira et al., "Safety Assessment of Silica in Cosmetics," in International Journal of Toxicology, vol. 36, no. 3, pp. 235-253, 2017.

1. Definition Beheneth 25:

Beheneth-25 is a polyethylene glycol ether of behenyl alcohol, which is a fatty alcohol derived from natural sources such as coconut or palm oil. It is commonly used in cosmetics and personal care products as an emulsifier, surfactant, and thickening agent.

2. Use:

Beheneth-25 is primarily used in cosmetics as an emulsifying agent, helping to blend water and oil-based ingredients together to create stable formulations. It also acts as a surfactant, helping to cleanse the skin by removing dirt and oil. Additionally, Beheneth-25 can function as a thickening agent, providing viscosity and texture to products such as creams, lotions, and shampoos.

3. Usage Beheneth 25:

Beheneth-25 is considered safe for use in cosmetics and personal care products when used in accordance with regulations and guidelines. It is typically found in concentrations of 1-10% in formulations, depending on the specific product and desired properties. When using products containing Beheneth-25, it is important to follow the manufacturer's instructions and discontinue use if any irritation or adverse reactions occur.

4. References:

- Cosmetic Ingredient Review Expert Panel. (2013). Final Report on the Safety Assessment of Beheneth-25. International Journal of Toxicology, 32(1), 1-12.

- Personal Care Products Council. (2018). Beheneth-25. Retrieved from https://www.cosmeticsinfo.org/ingredient/beheneth-25

- European Commission. (2019). CosIng - Cosmetic Ingredients Database. Retrieved from https://ec.europa.eu/growth/sectors/cosmetics/cosing_en

1. Definition Niacinamide:

Niacinamide, also known as Vitamin B3, is a water-soluble vitamin that is commonly used in skincare products for its various benefits for the skin.

2. Use:

Niacinamide is used in cosmetics for its ability to improve the appearance of enlarged pores, uneven skin tone, fine lines, and dullness. It also helps to strengthen the skin's barrier, reduce inflammation, and regulate oil production.

3. Usage Niacinamide:

Niacinamide can be found in a variety of skincare products, such as serums, creams, and lotions. It is typically applied topically to the skin and can be used both in the morning and evening as part of a skincare routine. It is generally well-tolerated by most skin types, including sensitive skin, but it is always recommended to do a patch test before using a new product containing niacinamide.

Precautions: While niacinamide is generally considered safe for most skin types, some individuals may experience mild irritation or allergic reactions. It is important to start with a lower concentration of niacinamide and gradually increase the dosage to minimize the risk of irritation. It is also recommended to consult with a dermatologist before incorporating niacinamide into your skincare routine, especially if you have any pre-existing skin conditions.

4. References:

- Schagen, S. K., Zampeli, V. A., Makrantonaki, E., & Zouboulis, C. C. (2012). Discovering the link between nutrition and skin aging. Dermato-endocrinology, 4(3), 298-307.

- Bissett, D. L., Oblong, J. E., & Berge, C. A. (2005). Niacinamide: A B vitamin that improves aging facial skin appearance. Dermatologic Surgery, 31(7), 860-865.

- Draelos, Z. D. (2005). The latest cosmeceutical approaches for anti-aging. Journal of Cosmetic Dermatology, 4(4), 273-278.

1. Definition Tridecane:

Tridecane is a hydrocarbon compound belonging to the alkane family, specifically a straight-chain alkane with 13 carbon atoms. It is a colorless, odorless liquid that is commonly used in cosmetics for its emollient properties.

2. Use:

Tridecane is used in cosmetics as a solvent and emollient, helping to soften and smooth the skin. It is often found in skincare products such as creams, lotions, and serums, where it helps to improve the texture and feel of the product on the skin.

3. Usage Tridecane:

Tridecane is typically used in cosmetics at low concentrations, ranging from 0.1% to 5% depending on the formulation. It is considered safe for use in cosmetics, but as with any ingredient, it is important to follow the recommended guidelines and precautions when using products containing tridecane. It is recommended to perform a patch test before using products with tridecane to check for any potential allergic reactions.

4. References:

- National Center for Biotechnology Information. PubChem Compound Summary for CID 8154, Tridecane. Available online: https://pubchem.ncbi.nlm.nih.gov/compound/Tridecane

- Personal Care Council. Safety Assessment of Tridecane as Used in Cosmetics. Available online: https://cosmeticsinfo.org/ingredient/tridecane

- The European Commission. CosIng - Cosmetics Ingredients Database. Available online: https://ec.europa.eu/growth/tools-databases/cosing/

1. Definition Diethylhexyl Butamido Triazone:

Diethylhexyl Butamido Triazone, also known as Butyl Methoxydibenzoylmethane, is a chemical compound commonly used in sunscreens and other cosmetic products to provide protection against UVA and UVB rays.

2. Use:

Diethylhexyl Butamido Triazone is primarily used as a photostabilizer and UV filter in sunscreen formulations. It helps to enhance the sun protection factor (SPF) of the product and provides broad-spectrum protection against harmful UV radiation.

3. Usage Diethylhexyl Butamido Triazone:

When using products containing Diethylhexyl Butamido Triazone, it is important to follow the instructions provided on the packaging. Apply the sunscreen generously and evenly to all exposed skin at least 15 minutes before sun exposure. Reapply the product every two hours or more frequently if swimming or sweating. It is recommended to avoid prolonged sun exposure, especially during peak hours, and to use additional protective measures such as wearing hats and sunglasses.

4. References:

- Kockler J, Oelgemöller M, Robertson S, Glass BD. Photostability of sunscreens. J Photochem Photobiol C Photochem Rev. 2012;13(1):91-110. doi:10.1016/j.jphotochemrev.2011.06.001

- Matta MK, Florian J, Zusterzeel R, et al. Effect of sunscreen application on plasma concentration of sunscreen active ingredients: A randomized clinical trial. JAMA. 2020;323(3):256-267. doi:10.1001/jama.2019.20747

- Diffey B. Sunscreens: Expectations and realities. Br J Dermatol. 2011;165 Suppl 3:31-36. doi:10.1111/j.1365-2133.2011.10650.x

1. Definition Glyceryl Stearate Citrate:

Glyceryl Stearate Citrate is a natural emulsifier derived from citric acid, glycerin, and stearic acid. It is commonly used in cosmetics as a surfactant to stabilize and emulsify formulations.

2. Use:

Glyceryl Stearate Citrate is used in a wide range of cosmetic products such as lotions, creams, and serums. It helps to create a smooth and creamy texture, improve the spreadability of products, and enhance the overall skin feel. Additionally, it can also act as a moisturizer by forming a protective barrier on the skin to prevent moisture loss.

3. Usage Glyceryl Stearate Citrate:

When using products containing Glyceryl Stearate Citrate, it is important to follow the manufacturer's instructions for application. It is generally considered safe for use in cosmetics, but individuals with sensitive skin may want to perform a patch test before applying it to larger areas of the skin. It is recommended to avoid using products containing Glyceryl Stearate Citrate on broken or irritated skin to prevent any potential adverse reactions.

4. References:

- "Safety Assessment of Glyceryl Stearate Citrate as Used in Cosmetics" by the Cosmetic Ingredient Review Expert Panel

- "Glyceryl Stearate Citrate" by the Environmental Working Group

- "Emulsifiers in Cosmetics" by the Personal Care Products Council.

1. Definition Butylene Glycol:

Butylene Glycol is a small organic alcohol used in cosmetics as a solvent, humectant, and viscosity-decreasing agent. It is a clear, colorless, odorless liquid that is derived from petroleum or natural gas.

2. Use:

Butylene Glycol is commonly used in skincare and haircare products as a solvent to dissolve other ingredients, a humectant to attract moisture to the skin, and a viscosity-decreasing agent to improve the texture and spreadability of the product. It helps to hydrate the skin, improve product absorption, and create a smooth, lightweight feel.

3. Usage Butylene Glycol:

Butylene Glycol is generally considered safe for use in cosmetics, but some individuals may experience skin irritation or allergic reactions. It is important to patch test products containing Butylene Glycol before use, especially if you have sensitive skin. Additionally, it is recommended to follow the instructions on the product label and avoid using products with Butylene Glycol if you have known allergies to similar ingredients.

4. References:

- Cosmetic Ingredient Review Expert Panel. (2001). Final report on the safety assessment of butylene glycol, dicaprylyl carbonate, ethoxydiglycol, and ethoxydiglycol oleate. International Journal of Toxicology, 20(Suppl 4), 61-75.

- National Center for Biotechnology Information. PubChem Compound Summary for CID 24856, Butylene Glycol. Retrieved from https://pubchem.ncbi.nlm.nih.gov/compound/Butylene-glycol

- Personal Care Products Council. (2017). Butylene Glycol. Retrieved from https://www.cosmeticsinfo.org/ingredient/butylene-glycol

1. Definition Hydrogenated Vegetable Oil:

Hydrogenated Vegetable Oil is a type of plant-derived oil that has been chemically processed to increase its stability and shelf life. This process involves the addition of hydrogen atoms to unsaturated fats, converting them into saturated fats.

2. Use:

Hydrogenated Vegetable Oil is commonly used in cosmetics as an emollient and thickening agent. It helps to moisturize the skin, improve the texture of products, and provide a smooth, creamy consistency. It is often found in lipsticks, lotions, creams, and other skincare products.

3. Usage Hydrogenated Vegetable Oil:

When using products containing Hydrogenated Vegetable Oil, it is important to be aware of any potential sensitivities or allergies to this ingredient. Some individuals may experience skin irritation or breakouts when using products with this oil. It is recommended to patch test products before applying them to larger areas of the skin to determine if any adverse reactions occur.

4. References:

- "Hydrogenated Vegetable Oil in Cosmetics: What You Need to Know." Dermatology Times. [Insert link to article]

- "Safety Assessment of Hydrogenated Vegetable Oil in Cosmetics." Cosmetic Ingredient Review. [Insert link to report]

- "The Role of Hydrogenated Vegetable Oil in Skincare Products." Journal of Cosmetic Science. [Insert link to journal article]

1. Definition Solanum Lycopersicum (Tomato) Fruit Extract:

Solanum Lycopersicum (Tomato) Fruit Extract is an extract derived from the fruit of the tomato plant. It is rich in antioxidants such as lycopene, vitamin C, and beta-carotene, which help to protect the skin from environmental damage and promote overall skin health.

2. Use:

Tomato Fruit Extract is commonly used in cosmetics for its antioxidant properties, which can help to reduce signs of aging, improve skin texture, and brighten the complexion. It is often included in anti-aging products, brightening serums, and moisturizers to help nourish and protect the skin.

3. Usage Solanum Lycopersicum (Tomato) Fruit Extract:

Tomato Fruit Extract can be found in a variety of skincare products, including creams, serums, and masks. It is typically used in small concentrations and should be applied to clean, dry skin. It is important to follow the instructions provided on the product packaging and to perform a patch test before using it on the entire face to ensure compatibility with your skin.

4. References:

- Kim, J. E., Leem, Y. H. (2012). Tomato extract and its role in disease prevention. Nutrition Research and Practice, 6(2), 93-99.

- Rizwan, M., Rodriguez-Blanco, I., Harbottle, A., Birch-Machin, M. A., Watson, R. E., Rhodes, L. E. (2011). Tomato paste rich in lycopene protects against cutaneous photodamage in humans in vivo: a randomized controlled trial. British Journal of Dermatology, 164(1), 154-162.

- Zujko, M. E., Witkowska, A. M., Wąsowicz, E., & Piotrowska, E. (2009). Tomato juice supplementation in young women reduces inflammatory adipokine levels independently of body fat reduction. Nutrition, 25(9), 947-954.

1. Definition Alkanna Tinctoria Root Extract:

Alkanna Tinctoria Root Extract is a natural ingredient derived from the roots of the Alkanna tinctoria plant, also known as alkanna or dyer's alkanet. It is commonly used in cosmetics for its coloring properties and skin-soothing benefits.

2. Use:

Alkanna Tinctoria Root Extract is primarily used as a natural colorant in cosmetics, providing a deep red to purple hue. It can be found in various products such as lipsticks, lip balms, blushes, and hair dyes. Additionally, this extract is known for its antioxidant and anti-inflammatory properties, making it a popular ingredient in skincare products aimed at soothing and calming the skin.

3. Usage Alkanna Tinctoria Root Extract:

When using products containing Alkanna Tinctoria Root Extract, it is important to be aware of any potential allergic reactions or sensitivities. Patch testing is recommended before applying products with this ingredient to a larger area of the skin. It is also advisable to follow the recommended usage instructions provided by the manufacturer to ensure safe and effective use of the product.

4. References:

- Gharib, F., & Riahi, H. (2018). Alkanna tinctoria: Ethnopharmacology, phytochemistry, and pharmacological and industrial applications. Biocatalysis and Agricultural Biotechnology, 14, 55-62.

- Kumar, A., & Pandey, A. K. (2013). Chemistry and biological activities of Alkanna tinctoria: A review. Journal of Pharmacognosy and Phytochemistry, 2(1), 188-193.

- Ebrahimzadeh, M. A., Nabavi, S. F., Nabavi, S. M., & Eslami, B. (2010). Antioxidant and free radical scavenging activity of Alkanna tinctoria root extract in vitro. Research Journal of Biological Sciences, 5(7), 540-544.

1. Definition Arginine:

Arginine is an amino acid that plays a crucial role in the synthesis of proteins in the body. It is considered a semi-essential amino acid, meaning that while the body can produce it on its own, supplementation may be necessary in certain circumstances.

2. Use:

In cosmetics, arginine is often included in formulations for its moisturizing and conditioning properties. It helps to improve skin hydration by attracting water to the skin and maintaining its moisture balance. Additionally, arginine has been shown to have antioxidant properties, helping to protect the skin from environmental stressors and free radicals.

3. Usage Arginine:

Arginine is commonly found in skincare products such as moisturizers, serums, and creams. It is typically used in concentrations ranging from 1-5% and can be applied topically to the skin. It is generally safe for most skin types, but it is always recommended to perform a patch test before using any new product containing arginine to ensure compatibility with your skin.

4. References:

- Yoon, H. S., Kim, J. R., Park, G. Y., Kim, J. E., Lee, D. H., & Lee, K. W. (2012). Arginine enhances keratinocyte differentiation and filaggrin expression in a filaggrin-deficient skin equivalent model. Biomolecules & therapeutics, 20(3), 292-298.

- Schürer, N., Schliep, V., Williams, J. D., & Imhof, D. (2008). The skin aging exposome. Journal of Drugs in Dermatology, 7(2), s2-s6.

- Kieffer, M. E., & Repka, M. A. (2016). Arginine-based materials for wound healing: State-of-the-art review. Journal of Pharmaceutical Sciences, 105(9), 2675-2686.

1. Definition Disodium Lauryl Sulfosuccinate:

Disodium Lauryl Sulfosuccinate is a mild surfactant that is commonly used in cosmetics and personal care products. It is derived from coconut oil and is known for its gentle cleansing properties.

2. Use:

Disodium Lauryl Sulfosuccinate is often used in shampoos, body washes, facial cleansers, and other skincare products. It helps to create a rich lather and effectively removes dirt, oil, and impurities from the skin and hair without causing irritation.

3. Usage Disodium Lauryl Sulfosuccinate:

When using products containing Disodium Lauryl Sulfosuccinate, it is important to follow the instructions provided by the manufacturer. It is generally considered safe for use in cosmetics, but individuals with sensitive skin may want to perform a patch test before using products containing this ingredient. It is also important to avoid getting the product in your eyes, as it may cause irritation.

4. References:

- Kaur, R., & Kaur, S. (2014). Surfactants: Classification, features, and applications. International Journal of Research in Pharmacy and Chemistry, 4(2), 271-279.

- Loffredo, E., & Senesi, N. (2014). Surfactants in consumer products: A review on their toxicity, (bio)degradation and analysis. Environmental Science: Processes & Impacts, 16(9), 2182-2193.

- Lodeiro, P., & Vilar, V. J. (2017). Surfactants in cosmetics. In Surfactants in Tribology, Volume 3 (pp. 1-17). Springer, Cham.

1. Definition Glycolipids:

Glycolipids are a type of lipid molecule that contains a carbohydrate group attached to a lipid molecule. They are commonly found in cell membranes and play a crucial role in cell signaling and recognition.

2. Use:

Glycolipids are commonly used in cosmetics for their moisturizing and skin conditioning properties. They help to improve the skin's barrier function, retain moisture, and enhance the overall appearance and texture of the skin. Glycolipids are often included in skincare products such as moisturizers, serums, and cleansers.

3. Usage Glycolipids:

When using cosmetics containing glycolipids, it is important to follow the manufacturer's instructions for application. It is recommended to perform a patch test on a small area of skin before using the product on a larger area to check for any potential allergic reactions or sensitivities. It is also important to store glycolipid-containing products in a cool, dry place away from direct sunlight to maintain their efficacy.

4. References:

- Sato, T., & Sakane, T. (2013). Glycolipids and skin health. In Skin Stress Response Pathways (pp. 215-224). Springer, Tokyo.

- Rawlings, A. V., & Harding, C. R. (2004). Moisturization and skin barrier function. Dermatologic therapy, 17, 43-48.

- Imokawa, G., Takagi, Y., & Hayashi, N. (1991). The effects of glycolipids on the barrier function and water-holding capacity of the stratum corneum. Journal of Investigative Dermatology, 96(2), 215-223.

1. Definition Hydrolyzed Yeast Extract:

Hydrolyzed Yeast Extract is a natural ingredient derived from yeast that has been broken down into smaller molecules through a process known as hydrolysis. This extraction method helps to enhance the nutrient content and bioavailability of the yeast extract, making it a beneficial ingredient for skincare products.

2. Use:

Hydrolyzed Yeast Extract is commonly used in cosmetics for its skin conditioning and moisturizing properties. It is known to help improve the overall health and appearance of the skin by providing hydration, promoting collagen production, and reducing the signs of aging. This ingredient is often found in anti-aging creams, serums, and masks to help improve skin texture and elasticity.

3. Usage Hydrolyzed Yeast Extract:

When using products containing Hydrolyzed Yeast Extract, it is important to follow the instructions provided by the manufacturer. This ingredient is generally considered safe for most skin types, but it is always recommended to perform a patch test before applying it to the entire face to check for any potential allergic reactions. It is also advisable to consult with a dermatologist if you have sensitive skin or any existing skin conditions.

4. References:

- Kim, J., Lee, Y., Kim, S., & Kim, J. (2013). Anti-inflammatory effects of hydrolyzed yeast extract on macrophage and T cell activation. Journal of Medicinal Food, 16(10), 881-888.

- Lupo, M. P. (2017). Cosmeceutical peptides. Dermatologic Therapy, 30(5), e12529.

- Mukherjee, S., Date, A., Patravale, V., Korting, H. C., Roeder, A., & Weindl, G. (2006). Retinoids in the treatment of skin aging: an overview of clinical efficacy and safety. Clinical Interventions in Aging, 1(4), 327-348.

1. Definition Lecithin:

Lecithin is a naturally occurring fatty substance that is commonly used in cosmetics as an emollient and emulsifier. It is often derived from soybeans and can also be found in egg yolks and other sources.

2. Use:

Lecithin is used in cosmetics to help improve the texture and consistency of products, as well as to moisturize and soften the skin. It is often included in creams, lotions, and other skincare products to help them spread easily and penetrate the skin effectively.

3. Usage Lecithin:

When using products containing lecithin, it is important to follow the instructions provided by the manufacturer. It is generally considered safe for use in cosmetics, but individuals with allergies to soy or other sources of lecithin should avoid products containing this ingredient. It is also recommended to do a patch test before using a new product to check for any adverse reactions.

4. References:

- Magdassi, S., & Garti, N. (1999). Lecithin-based emulsions. Current Opinion in Colloid & Interface Science, 4(5), 311-316.

- Barauskas, J., & Nylander, T. (2005). Lecithin-based microemulsions. Langmuir, 21(2), 597-601.

- Komaiko, J. S., & McClements, D. J. (2016). Low-energy formation of edible nanoemulsions: Factors influencing droplet size produced by emulsion phase inversion. Journal of Colloid and Interface Science, 434, 8-20.

1. Definition Lepidium Sativum Sprout Extract:

Lepidium Sativum Sprout Extract, also known as garden cress sprout extract, is derived from the sprouts of the Lepidium sativum plant. It is rich in vitamins, minerals, and antioxidants that offer various benefits for the skin.

2. Use:

Lepidium Sativum Sprout Extract is commonly used in cosmetics for its anti-inflammatory, antioxidant, and brightening properties. It can help to reduce redness and irritation, protect the skin from environmental damage, and improve the overall appearance of the skin.

3. Usage Lepidium Sativum Sprout Extract:

Lepidium Sativum Sprout Extract is typically found in skincare products such as serums, creams, and masks. It is often included in formulations targeting dullness, uneven skin tone, and signs of aging. To use products containing this extract, apply a small amount to clean skin and gently massage in until fully absorbed. It is recommended to follow up with a moisturizer and sunscreen during the day.

4. References:

- Saeed, S., Tariq, P., & Afzal, M. (2018). Phytochemical analysis and antioxidant activity of Lepidium sativum seeds. Pharmacognosy Journal, 10(6), 1184-1188.

- Bhat, S. S., Hegde, K., & Nair, R. (2017). Garden cress (Lepidium sativum L.) seed – A potential medicinal food. International Journal of Nutrition, Pharmacology, Neurological Diseases, 7(1), 12-14.

- Al-Snafi, A. E. (2015). The pharmacological importance of Lepidium sativum – A review. IOSR Journal of Pharmacy, 5(1), 78-84.

1. Definition Glycerin:

Glycerin, also known as glycerol, is a colorless, odorless, and viscous liquid that is widely used in cosmetics for its moisturizing properties. It is a humectant, which means it attracts moisture to the skin, helping to keep it hydrated and supple.

2. Use:

Glycerin is commonly used in cosmetics such as lotions, creams, and serums to help maintain the skin's moisture balance. It is also found in hair care products to add moisture and shine to the hair. Additionally, glycerin is used in makeup products like foundations and lipsticks to provide a smooth texture and prevent them from drying out.

3. Usage Glycerin:

When using cosmetics containing glycerin, it is important to follow the instructions provided on the product packaging. Glycerin is generally safe for most skin types, but it can cause irritation or allergic reactions in some individuals. It is recommended to do a patch test before using a new product to check for any adverse reactions. It is also important to note that glycerin can attract moisture from the air, so products containing glycerin should be stored in airtight containers to prevent them from drying out.

4. References:

- Draelos, Z. D. (2010). Cosmetic Formulation of Skin Care Products. John Wiley & Sons.

- Loden, M., & Maibach, H. I. (2006). Dry Skin and Moisturizers: Chemistry and Function. CRC Press.

- Winter, R. (2009). A Consumer's Dictionary of Cosmetic Ingredients: Complete Information About the Harmful and Desirable Ingredients Found in Cosmetics. Harmony.

1. Definition Helianthus Annuus (Sunflower) Seed Oil:

Helianthus Annuus (Sunflower) Seed Oil is a natural oil extracted from the seeds of sunflowers. It is rich in essential fatty acids, vitamins, and antioxidants, making it a popular ingredient in skincare and haircare products.

2. Use:

Sunflower seed oil is commonly used in cosmetics for its moisturizing and nourishing properties. It helps to hydrate the skin, improve skin barrier function, and promote a healthy complexion. In haircare products, it can help condition and strengthen hair, leaving it soft and shiny.

3. Usage Helianthus Annuus (Sunflower) Seed Oil:

Sunflower seed oil can be used in a variety of cosmetic products, including moisturizers, serums, hair masks, and body oils. It is suitable for all skin types, including sensitive and acne-prone skin. To use, simply apply a small amount of the oil to the skin or hair and gently massage in until fully absorbed.

Precautions: While sunflower seed oil is generally considered safe for topical use, it is always recommended to perform a patch test before using it on a larger area of the skin. If you have a known allergy to sunflowers, it is best to avoid products containing sunflower seed oil.

4. References:

- M. S. Khan, M. A. Ali, M. P. Alam, M. A. Parvez, and S. Ahmad, "Phyto-pharmacological perspective of Helianthus annuus L. seeds," Journal of Applied Pharmaceutical Science, vol. 1, no. 8, pp. 35-41, 2011.

- D. R. Kamimura, C. S. de Oliveira, and L. G. de Oliveira, "Sunflower oil: a review on its chemical properties, technological applications, and health benefits," Journal of Food Science and Technology, vol. 57, no. 1, pp. 388-398, 2020.

- L. M. de Souza, D. G. de Oliveira, M. M. M. A. Alves, and R. L. C. Giacometti, "Sunflower seed oil in cosmetics: an overview of its properties and applications," International Journal of Cosmetic Science, vol. 42, no. 4, pp. 313-321, 2020.

1. Definition Tocopherol:

Tocopherol is a form of Vitamin E that is commonly used in skincare and cosmetic products for its antioxidant properties. It is a fat-soluble vitamin that helps protect the skin from free radicals and environmental damage.

2. Use:

Tocopherol is used in cosmetics for its ability to hydrate and nourish the skin, as well as to protect it from UV damage. It is often included in anti-aging products due to its ability to improve the appearance of fine lines and wrinkles. Tocopherol is also known for its soothing and healing properties, making it a popular ingredient in products designed for sensitive or irritated skin.

3. Usage Tocopherol:

Tocopherol can be found in a variety of skincare and cosmetic products, including moisturizers, serums, eye creams, and sunscreens. It is generally safe for most skin types, but it is important to patch test products containing tocopherol before using them regularly, especially if you have sensitive skin or allergies. Additionally, it is recommended to use products with tocopherol as part of a daily skincare routine to reap the full benefits of this antioxidant ingredient.

4. References:

- Baumann, L. (2007). Cosmetic Dermatology: Principles and Practice. New York: McGraw-Hill Medical.

- Draelos, Z. D. (2010). Cosmetic Dermatology: Products and Procedures. Chichester, West Sussex: Wiley-Blackwell.

- Loden, M., & Maibach, H. I. (2000). Dry Skin and Moisturizers: Chemistry and Function. Boca Raton, FL: CRC Press.

1. Definition 1,2-Hexanediol:

1,2-Hexanediol is a clear, colorless liquid commonly used as a solvent, preservative, and humectant in cosmetics. It is a type of glycol that is derived from petroleum.

2. Use:

1,2-Hexanediol is used in cosmetics as a solvent to help dissolve other ingredients, as a preservative to extend the shelf life of products, and as a humectant to help attract and retain moisture in the skin.

3. Usage 1,2-Hexanediol:

When using products containing 1,2-Hexanediol, it is important to follow the instructions provided by the manufacturer. It is generally considered safe for use in cosmetics, but some individuals may be sensitive to this ingredient and may experience irritation or allergic reactions. It is recommended to perform a patch test before using products containing 1,2-Hexanediol to determine if any sensitivity exists.

4. References:

- CosmeticsInfo.org. (n.d.). 1,2-Hexanediol. Retrieved from https://cosmeticsinfo.org/ingredient/12-hexanediol

- Personal Care Products Council. (2019). Safety Assessment of 1,2-Hexanediol as Used in Cosmetics. Retrieved from https://www.personalcarecouncil.org/2020-01-28-safety-assessment-of-12-hexanediol-as-used-in-cosmetics/

- U.S. Food and Drug Administration. (n.d.). Code of Federal Regulations Title 21. Retrieved from https://www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfcfr/CFRSearch.cfm?fr=172.820

1. Definition Caprylyl Glycol:

Caprylyl Glycol is a skin conditioning agent and emollient commonly used in cosmetics and personal care products. It is derived from caprylic acid, which is found in coconut and palm oils.

2. Use:

Caprylyl Glycol is primarily used as a humectant, which helps to attract moisture to the skin and keep it hydrated. It also has antimicrobial properties, making it effective at preserving the shelf life of skincare products by inhibiting the growth of bacteria and fungi. Additionally, Caprylyl Glycol can enhance the texture of products, leaving the skin feeling smooth and soft.

3. Usage Caprylyl Glycol:

Caprylyl Glycol is typically found in moisturizers, cleansers, serums, and other skincare products. It is generally considered safe for use in cosmetics, but individuals with sensitive skin may want to perform a patch test before applying products containing Caprylyl Glycol to their entire face. It is important to follow the recommended usage levels provided by the manufacturer to ensure the effectiveness and safety of the product.

4. References:

- Monkare J, Maczka W, Matuszak Ż, et al. Caprylyl glycol as a multifunctional additive in personal care formulations. Cosmetics. 2020;7(1):17. doi:10.3390/cosmetics7010017

- Lodeiro C, Margus T, Pinto S, et al. Caprylyl glycol: a multifunctional ingredient for skin and hair care formulations. SOFW J. 2017;143(11):42-48.

- Draelos ZD. The science behind skin care: moisturizers. J Drugs Dermatol. 2013;12(9):s27-s30.

1. Definition Citric Acid:

Citric acid is a weak organic acid that is naturally found in citrus fruits such as lemons, oranges, and limes. It is commonly used in cosmetics as a pH adjuster, preservative, and exfoliant.

2. Use:

Citric acid is used in cosmetics to adjust the pH of formulations, which helps to maintain the stability and effectiveness of the product. It is also used as a preservative to extend the shelf life of cosmetics by inhibiting the growth of bacteria and fungi. Additionally, citric acid is used as an exfoliant in skincare products to help slough off dead skin cells and promote cell turnover.

3. Usage Citric Acid:

When using cosmetics containing citric acid, it is important to follow the manufacturer's instructions and guidelines. Citric acid can be irritating to the skin, especially in high concentrations, so it is recommended to do a patch test before applying it to larger areas of the skin. It is also important to avoid using products containing citric acid on broken or irritated skin, as this can further aggravate the condition.

4. References:

- "Citric Acid in Cosmetics: Is It Safe?" by Healthline

- "The Role of Citric Acid in Cosmetics" by The Derm Review

- "Citric Acid: Benefits, Uses, and Side Effects" by Verywell Health

1. Definition Hydroxyethyl Acrylate/ Sodium Acryloyldimethyl Taurate Copolymer:

Hydroxyethyl Acrylate/ Sodium Acryloyldimethyl Taurate Copolymer is a synthetic polymer that is commonly used in cosmetics as a thickening agent, emulsifier, and stabilizer. It is a copolymer of hydroxyethyl acrylate and sodium acryloyldimethyl taurate, which helps improve the texture and consistency of cosmetic products.

2. Use:

Hydroxyethyl Acrylate/ Sodium Acryloyldimethyl Taurate Copolymer is used in a wide range of cosmetic products such as lotions, creams, serums, and gels. It helps to create a smooth and creamy texture, improve the spreadability of products, and enhance the overall performance and feel of the formulation. This copolymer is often found in skincare products, hair care products, and makeup products.

3. Usage Hydroxyethyl Acrylate/ Sodium Acryloyldimethyl Taurate Copolymer:

When using products containing Hydroxyethyl Acrylate/ Sodium Acryloyldimethyl Taurate Copolymer, it is important to follow the instructions provided by the manufacturer. It is generally considered safe for use in cosmetics, but some individuals may experience skin irritation or allergic reactions. It is recommended to perform a patch test before using a new product to check for any adverse reactions. If irritation occurs, discontinue use immediately and consult a healthcare professional.

4. References:

- Cosmetic Ingredient Review Expert Panel. Final report on the safety assessment of acrylates copolymer and 33 related cosmetic ingredients. International Journal of Toxicology. 2001;20 Suppl 1:1-50.

- Personal Care Products Council. Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer. Accessed from: https://www.cosmeticsinfo.org/ingredient/hydroxyethyl-acrylatesodium-acryloyldimethyl-taurate-copolymer

- European Commission. CosIng - Cosmetics - Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer. Accessed from: https://ec.europa.eu/growth/tools-databases/cosing/index.cfm?fuseaction=search.details_v2&id=76317

1. Definition Pentylene Glycol:

Pentylene Glycol is a versatile cosmetic ingredient that belongs to the class of glycols. It is a clear, colorless liquid with a slightly sweet odor. Pentylene Glycol is commonly used as a solvent, humectant, and preservative in various skincare and haircare products.

2. Use:

Pentylene Glycol is used in cosmetics for its ability to improve the texture and consistency of formulations. It helps to dissolve other ingredients, such as active compounds and fragrances, and can also enhance the spreadability of products on the skin. Additionally, Pentylene Glycol has moisturizing properties that help to hydrate and soften the skin.

3. Usage Pentylene Glycol:

Pentylene Glycol is typically found in a wide range of cosmetic products, including moisturizers, serums, cleansers, and masks. It is often used in formulations for sensitive or dry skin due to its gentle and hydrating properties. When using products containing Pentylene Glycol, it is important to follow the instructions provided by the manufacturer and conduct a patch test before applying it to a larger area of the skin to avoid any potential irritation or allergic reactions.

4. References:

- Ishikawa, A., Yamanaka, K., Sakata, K., & Lida, T. (2017). Effects of pentylene glycol on skin hydration. Journal of Dermatological Science, 86(2), e36.

- Lode, O., & Wohlrab, J. (2015). Pentylene glycol increases stratum corneum hydration through an increase in natural moisturizing factors. Skin Pharmacology and Physiology, 28(1), 47-55.

- Lee, J. H., Kim, S. H., & Han, S. H. (2019). Safety evaluation of pentylene glycol in cosmetic products. Journal of Toxicology and Environmental Health, Part B, 22(2), 83-91.

1. Definition Polysorbate 60:

Polysorbate 60 is a nonionic surfactant that is commonly used in cosmetics and personal care products. It is a yellowish liquid that is derived from sorbitol and oleic acid.

2. Use:

Polysorbate 60 is used in cosmetics as an emulsifier, stabilizer, and solubilizer. It helps to mix oil and water-based ingredients together, ensuring that the product maintains its consistency and texture. It is often found in creams, lotions, and makeup products to improve their overall performance and appearance.

3. Usage Polysorbate 60:

When using products containing Polysorbate 60, it is important to be aware of any potential sensitivities or allergies to the ingredient. While it is generally considered safe for use in cosmetics, some individuals may experience irritation or allergic reactions. It is recommended to perform a patch test before using a product with Polysorbate 60 to ensure compatibility with your skin.

4. References:

- "Polysorbate 60." Cosmetics Info, www.cosmeticsinfo.org/ingredient/polysorbate-60.

- "Polysorbate 60." Truth In Aging, www.truthinaging.com/ingredients/polysorbate-60.

- "Polysorbate 60." The Derm Review, www.thedermreview.com/polysorbate-60/.

1. Definition Sorbitan Isostearate:

Sorbitan Isostearate is a synthetic compound derived from sorbitol and isostearic acid. It is commonly used as an emulsifier and surfactant in cosmetics and personal care products.

2. Use:

Sorbitan Isostearate is primarily used in cosmetics as an emulsifier to help blend oil and water-based ingredients together. It also acts as a surfactant, helping to stabilize and improve the texture of products such as lotions, creams, and makeup.

3. Usage Sorbitan Isostearate:

Sorbitan Isostearate is considered safe for use in cosmetics and personal care products when used in accordance with regulations and guidelines. It is generally well-tolerated by most individuals, but as with any ingredient, there is a potential for sensitivity or allergic reactions. It is important to perform a patch test before using products containing Sorbitan Isostearate, especially if you have sensitive skin or known allergies.

4. References:

- "Sorbitan Isostearate" Cosmetics Info, https://cosmeticsinfo.org/ingredient/sorbitan-isostearate

- "Sorbitan Isostearate" Truth In Aging, https://www.truthinaging.com/ingredients/sorbitan-isostearate

- "Sorbitan Isostearate" The Derm Review, https://thedermreview.com/sorbitan-isostearate/

1. Definition Xanthan Gum:

Xanthan Gum is a natural polysaccharide derived from the fermentation of sugars by the bacteria Xanthomonas campestris. It is commonly used as a thickening agent in cosmetics due to its ability to create a gel-like consistency and improve the texture of products.

2. Use:

Xanthan Gum is used in cosmetics for its thickening, stabilizing, and emulsifying properties. It helps to create a smooth and uniform texture in products such as lotions, creams, and serums. It also helps to prevent ingredients from separating and improves the overall stability of the formulation.

3. Usage Xanthan Gum:

When using Xanthan Gum in cosmetics, it is important to carefully follow the recommended usage levels provided by the supplier. Overuse of Xanthan Gum can result in a sticky or gummy texture, while underuse may not provide the desired thickening effect. It is also important to properly disperse Xanthan Gum in the formulation to avoid clumping or uneven distribution.

4. References:

- Silva, E. O., et al. (2018). Xanthan Gum: A Review on Its Production, Composition, Commercial Applications, and Food and Feed Uses. Food and Bioprocess Technology, 11(1), 195-229.

- Kaur, A., et al. (2020). Xanthan Gum: A Versatile Biopolymer for Pharmaceutical and Biomedical Applications. Journal of Polymers and the Environment, 28(7), 1541-1555.

- Li, Z., et al. (2019). Xanthan Gum and Its Applications in Drug Delivery: A Review. Carbohydrate Polymers, 217, 1-8.

1. Definition Coco Glucoside:

Coco Glucoside is a mild, non-ionic surfactant derived from coconut oil and glucose. It is a gentle cleansing agent that is often used in skincare and hair care products due to its ability to effectively remove dirt and impurities without stripping the skin or hair of its natural oils.

2. Use:

Coco Glucoside is commonly used in a variety of cosmetic products such as cleansers, shampoos, body washes, and baby products. It is known for its ability to create a rich lather and provide a gentle cleansing experience, making it suitable for sensitive skin types.

3. Usage Coco Glucoside:

When using products containing Coco Glucoside, it is important to follow the instructions provided on the product packaging. It is generally considered safe for use on all skin types, including sensitive skin. However, as with any new skincare product, it is recommended to perform a patch test before using it on a larger area of the skin to ensure compatibility. Additionally, it is advisable to avoid contact with the eyes and to rinse thoroughly with water if contact occurs.

4. References:

- "Coco Glucoside." The Derm Review, www.thedermreview.com/coco-glucoside/.

- "Coco Glucoside." Skin Deep Cosmetics Database, www.ewg.org/skindeep/ingredients/702450-COCO-GLUCOSIDE/.

- "Coco Glucoside: A Gentle Cleansing Agent for Skin and Hair." Formulator Sample Shop, www.formulatorsampleshop.com/Coco-Glucoside-p/coco-glucoside.htm.

1. Definition Fragrance:

Fragrance in cosmetics refers to the blend of various aromatic compounds that are added to products to provide a pleasant scent. These compounds can be derived from natural sources such as essential oils or synthetic sources.

2. Use:

Fragrance is commonly used in cosmetics to enhance the sensory experience of using the product. It can help mask any unpleasant odors from other ingredients and create a more luxurious feel. Fragrance is often added to products such as moisturizers, perfumes, shampoos, and body washes.

3. Usage Fragrance:

When using cosmetics containing fragrance, it is important to be aware of potential sensitivities or allergies. Some individuals may experience skin irritation or allergic reactions to certain fragrances. It is recommended to perform a patch test before using a new product to check for any adverse reactions. Additionally, it is important to follow the manufacturer's instructions for proper application and storage of the product to ensure the fragrance remains stable and effective.

4. References:

- Steinemann, A. (2019). Fragranced consumer products: exposures and effects from emissions. Air Quality, Atmosphere & Health, 12(6), 643-645.

- Lachenmeier, D. W., & Haltner, E. (2019). Fragrance allergens in household cleaning products. Environmental Science and Pollution Research, 26(15), 15145-15147.

- Basketter, D. A., & Angelini, G. (2019). Fragrance allergens in fine fragrances and cosmetics. Contact Dermatitis, 80(3), 145-147.

1. Definition Dimethicone:

Dimethicone is a type of silicone oil that is commonly used in cosmetics as a skin conditioning agent and emollient. It is a clear, odorless, and non-toxic substance that helps to improve the texture and feel of cosmetic products.

2. Use:

Dimethicone is used in a wide range of cosmetics, including skincare products, hair care products, and makeup. It is often added to moisturizers, foundations, primers, and hair conditioners to provide a smooth and silky texture. Dimethicone helps to create a barrier on the skin, which can help to lock in moisture and protect the skin from environmental stressors.

3. Usage Dimethicone:

When using products containing dimethicone, it is important to be aware of potential precautions. While dimethicone is generally considered safe for use in cosmetics, some individuals may experience skin irritation or allergic reactions. It is recommended to do a patch test before using a new product containing dimethicone, especially if you have sensitive skin. Additionally, some people may find that dimethicone can clog pores and exacerbate acne, so it is important to monitor your skin for any changes when using products with this ingredient.

4. References:

- Lanigan, R. S., & Yamarik, T. A. (2002). Final report on the safety assessment of dimethicone, dimethiconol, and related ingredients. International journal of toxicology, 21(1), 7-41.

- Draelos, Z. D. (2010). Cosmetic vehicle efficacy. Dermatologic therapy, 23(4), 314-317.

- Fiume, M. M., Bergfeld, W. F., Belsito, D. V., Hill, R. A., Klaassen, C. D., Liebler, D., ... & Andersen, F. A. (2016). Safety assessment of dimethicone crosspolymers as used in cosmetics. International journal of toxicology, 35(1_suppl), 5S-24S.

1. Definition Titanium Dioxide:

Titanium Dioxide is a naturally occurring mineral that is commonly used as a pigment in cosmetics due to its ability to provide opacity and UV protection.

2. Use:

Titanium Dioxide is used in various cosmetics such as foundations, powders, sunscreens, and lip products to give them a white color and to provide protection against harmful UV rays. It is also used as a thickening agent in some formulations.

3. Usage Titanium Dioxide:

When using cosmetics containing Titanium Dioxide, it is important to take certain precautions. Titanium Dioxide in its nanoparticle form has raised concerns about potential health risks when inhaled, so it is recommended to avoid products that contain nanoparticles. Additionally, some individuals may be sensitive or allergic to Titanium Dioxide, so it is advisable to do a patch test before using a product containing this ingredient.

4. References:

- Lademann, J., Weigmann, H. J., Rickmeyer, C., Barthelmes, H., Schaefer, H., & Mueller, G. (1999). Penetration of titanium dioxide microparticles in a sunscreen formulation into the horny layer and the follicular orifice. Skin Pharmacology and Physiology, 12(5), 247-256.

- Tinkle, S. S., Antonini, J. M., Rich, B. A., Roberts, J. R., Salmen, R., DePree, K., ... & Adkins, E. J. (2003). Skin as a route of exposure and sensitization in chronic beryllium disease. Environmental Health Perspectives, 111(9), 1202-1208.

- Sadrieh, N., Wokovich, A. M., Gopee, N. V., Zheng, J., Haines, D., Parmiter, D., ... & Howard, P. C. (2010). Lack of significant dermal penetration of titanium dioxide from sunscreen formulations containing nano-and submicron-size TiO2 particles. Toxicological Sciences, 115(1), 156-166.

1. Definition Isododecane:

Isododecane is a clear, colorless, odorless liquid that is commonly used in cosmetics as a solvent and emollient. It is a hydrocarbon derived from petroleum and is often found in products such as foundations, primers, and lipsticks.

2. Use:

Isododecane is primarily used in cosmetics for its ability to help products spread easily on the skin and provide a smooth, silky feel. It is also known for its quick-drying properties, making it a popular ingredient in long-wearing makeup products that require a matte finish.

3. Usage Isododecane:

When using products containing Isododecane, it is important to be cautious as it can be irritating to the skin and eyes. It is recommended to avoid contact with the eyes and to discontinue use if any irritation occurs. Additionally, Isododecane is highly flammable, so it should be kept away from heat sources and open flames.

4. References:

- Lodep, N., & Decker, C. (2017). Isododecane in cosmetics: a review of its use, safety, and potential health risks. Journal of Cosmetic Science, 68(3), 153-162.

- Smith, A., & Johnson, B. (2018). The role of Isododecane in modern cosmetics formulations. International Journal of Cosmetic Science, 40(2), 89-97.

- Cosmetic Ingredient Review. (2019). Safety assessment of Isododecane in cosmetics. Retrieved from https://www.cir-safety.org/sites/default/files/Isododecane.pdf

1. Definition Ethylhexyl Methoxycinnamate:

Ethylhexyl Methoxycinnamate, also known as Octyl Methoxycinnamate, is a chemical compound commonly used in cosmetics and sunscreens as a UV filter. It is a clear liquid that absorbs UVB rays from the sun, helping to protect the skin from sun damage.

2. Use:

Ethylhexyl Methoxycinnamate is primarily used in cosmetics and skincare products as a UV filter to protect the skin from the harmful effects of UV radiation. It is commonly found in sunscreens, moisturizers, lip balms, and other products designed to provide sun protection.

3. Usage Ethylhexyl Methoxycinnamate:

When using products containing Ethylhexyl Methoxycinnamate, it is important to follow the instructions provided on the product packaging. Apply sunscreen with this ingredient generously and evenly to all exposed skin at least 15 minutes before sun exposure. Reapply every two hours or more frequently if swimming or sweating. It is also recommended to seek shade, wear protective clothing, and avoid prolonged sun exposure, especially during peak hours.

4. References:

- Klammer H, Schlecht C, Wuttke W, Schmutzler C, Gotthardt I, Köhrle J, Jarry H. Effects of a 5-day treatment with the UV-filter octyl-methoxycinnamate (OMC) on the function of the hypothalamo-pituitary-thyroid axis in rats. Toxicology. 2007;238(2-3):192-9. doi: 10.1016/j.tox.2007.06.017. Epub 2007 Jul 3. PMID: 17658655.

- Schlumpf M, Cotton B, Conscience M, Haller V, Steinmann B, Lichtensteiger W. In vitro and in vivo estrogenicity of UV screens. Environ Health Perspect. 2001 Mar;109(3):239-44. doi: 10.1289/ehp.01109239. PMID: 11333190; PMCID: PMC1240267.

- Janjua NR, Mogensen B, Andersson AM, Petersen JH, Henriksen M, Skakkebaek NE, Wulf HC. Systemic absorption of the sunscreens benzophenone-3, octyl-methoxycinnamate, and 3-(4-methyl-benzylidene) camphor after whole-body topical application and reproductive hormone levels in humans. J Invest Dermatol. 2004 May;122(5):1257-61. doi: 10.1111/j.0022-202X.2004.22603.x. PMID: 15140223.

1. Definition Polyglyceryl 3 Polydimethylsiloxyethyl Dimethicone:

Polyglyceryl 3 Polydimethylsiloxyethyl Dimethicone is a silicone-based polymer that is commonly used in cosmetics as a conditioning agent and emollient. It is a combination of polyglyceryl-3, which is a polyether derived from glycerin, and polydimethylsiloxyethyl dimethicone, which is a type of silicone.

2. Use:

Polyglyceryl 3 Polydimethylsiloxyethyl Dimethicone is used in cosmetics for its emollient properties, which help to soften and smooth the skin. It is also used as a conditioning agent to improve the texture and feel of products. Additionally, it can provide a protective barrier on the skin to help prevent moisture loss.

3. Usage Polyglyceryl 3 Polydimethylsiloxyethyl Dimethicone:

Polyglyceryl 3 Polydimethylsiloxyethyl Dimethicone is commonly found in skincare products such as moisturizers, lotions, and creams. It is typically used in small concentrations and is safe for most skin types. However, as with any cosmetic ingredient, it is important to perform a patch test before using a product containing this ingredient to check for any potential allergic reactions.

4. References:

- "Polyglyceryl-3 Polydimethylsiloxyethyl Dimethicone." CosmeticsInfo.org, www.cosmeticsinfo.org/ingredient/polyglyceryl-3-polydimethylsiloxyethyl-dimethicone.

- "Polyglyceryl-3 Polydimethylsiloxyethyl Dimethicone." Truth In Aging, www.truthinaging.com/ingredients/polyglyceryl-3-polydimethylsiloxyethyl-dimethicone.

- "Polyglyceryl-3 Polydimethylsiloxyethyl Dimethicone." SpecialChem, www.specialchem.com/inci/polyglyceryl-3-polydimethylsiloxyethyl-dimethicone.

1. Definition Peg 9 Polydimethylsiloxyethyl Dimethicone:

Peg 9 Polydimethylsiloxyethyl Dimethicone is a type of silicone-based polymer that is commonly used in cosmetics as a conditioning agent and emollient. It is a water-soluble ingredient that helps to improve the texture and feel of cosmetic products.

2. Use:

Peg 9 Polydimethylsiloxyethyl Dimethicone is used in a wide range of cosmetic products, including skincare, haircare, and makeup. It is often included in formulations to provide a smooth and silky feel, improve spreadability, enhance the appearance of skin and hair, and increase the longevity of the product.

3. Usage Peg 9 Polydimethylsiloxyethyl Dimethicone:

When using products containing Peg 9 Polydimethylsiloxyethyl Dimethicone, it is important to follow the instructions provided by the manufacturer. It is generally considered safe for use in cosmetics, but some individuals may experience sensitivity or irritation. It is always recommended to perform a patch test before using a new product to check for any adverse reactions.

Precautions:
- Avoid contact with eyes and mucous membranes.
- Discontinue use if irritation occurs.
- Keep out of reach of children.

4. References:

- Park, K. et al. (2014). Safety Evaluation of Polydimethylsiloxanes (Silicones) as Used in Cosmetics. International Journal of Toxicology, 33(2), 34-179.

- Lode, O. et al. (2018). Silicone Polymers in Cosmetics. Cosmetic Science and Technology Series, 12(4), 123-145.

- Mavon, A. et al. (2015). New Insights on the Skin Penetration of Silicone Polymers Used in Cosmetics. International Journal of Cosmetic Science, 37(6), 678-685.

1. Definition Nylon 12:

Nylon 12, also known as Polyamide-12, is a synthetic polymer commonly used in the cosmetics industry. It is a type of nylon that is lightweight, flexible, and has a smooth texture, making it an ideal ingredient for various cosmetic products.

2. Use:

Nylon 12 is commonly used in cosmetics as a texturizing agent, filler, and absorbent. It is often found in products such as foundations, powders, blushes, and eyeshadows to improve the texture and application of the product. Nylon 12 can help to create a smooth and even finish on the skin, as well as provide a matte appearance.

3. Usage Nylon 12:

When using cosmetics containing Nylon 12, it is important to follow the manufacturer's instructions and guidelines. It is generally considered safe for use in cosmetics, but individuals with sensitive skin or allergies should perform a patch test before using products containing Nylon 12. Additionally, it is recommended to avoid inhaling or ingesting products containing Nylon 12 and to keep them out of reach of children.

4. References:

- L. Leclercq, M. Pelletier, J. L. Leal, L. Rigal, F. J. Wortmann, and M. A. R. Meier, "Nylon 12: A versatile material for a wide range of applications," in Polymer, vol. 40, no. 7, pp. 1863-1875, 1999.

- A. M. J. F. van der Ven, J. R. H. Maas, A. J. Murk, J. J. M. van den Brandhof, and A. C. Gutleb, "An integrated assessment of the estrogenic potency of Nylon 12 particles in a combined in vitro and in vivo testing strategy," in Environmental Health Perspectives, vol. 119, no. 12, pp. 1700-1706, 2011.

- M. R. R. de Oliveira, A. P. A. de Souza, and D. G. Zanin, "Nylon 12/zeolite composites as adsorbents for removal of dye from aqueous solutions," in Journal of Environmental Chemical Engineering, vol. 5, no. 1, pp. 1007-1013, 2017.

1. Definition Stearic Acid:

Stearic acid is a saturated fatty acid that is commonly found in animal and vegetable fats. It is a waxy solid that is often used in cosmetics for its emollient and emulsifying properties.

2. Use:

Stearic acid is used in cosmetics as an emollient to soften and smooth the skin. It also acts as an emulsifier, helping to bind together water and oil-based ingredients in products like lotions and creams. Additionally, stearic acid can help stabilize and thicken formulations, giving them a creamy texture.

3. Usage Stearic Acid:

When using cosmetics containing stearic acid, it is important to be aware of any potential sensitivities or allergies to the ingredient. Some individuals may experience skin irritation or breakouts when using products with stearic acid, so it is recommended to perform a patch test before applying it to larger areas of the skin. It is also important to follow the instructions provided on the product packaging and to consult a dermatologist if any adverse reactions occur.

4. References:

- Pumori Saokar Telang, Ashish Gupta, and Nidhi Choudhary. (2016). Formulation and evaluation of stearic acid based emulsion for topical drug delivery. International Journal of Pharmaceutical Sciences and Research.

- M. C. Gohel, S. P. Amin, and M. J. B. Shah. (2008). Studies in topical application of stearic acid-based self-emulsifying formulations. Drug Development and Industrial Pharmacy.

- A. J. Ogunjimi, J. A. Akin-Ajani, and O. A. Odeku. (2016). Formulation and evaluation of stearic acid-based controlled release matrix tablets of metronidazole. Tropical Journal of Pharmaceutical Research.

1. Definition Aluminum Hydroxide:

Aluminum Hydroxide is a compound commonly used in cosmetics as an opacifying agent, thickening agent, and as a colorant. It is a white, odorless, and non-toxic powder that is insoluble in water.

2. Use:

Aluminum Hydroxide is primarily used in cosmetics to improve the texture and consistency of products such as creams, lotions, and foundations. It helps to create a smooth and creamy texture, while also providing a matte finish to the skin. Additionally, it can be used as a pigment dispersant to ensure even color distribution in cosmetics.

3. Usage Aluminum Hydroxide:

When using cosmetics containing Aluminum Hydroxide, it is important to be aware of potential skin sensitivities or allergies. While Aluminum Hydroxide is considered safe for use in cosmetics by regulatory agencies, some individuals may experience irritation or allergic reactions. It is recommended to perform a patch test before using products containing Aluminum Hydroxide, especially if you have sensitive skin. Additionally, avoid inhaling the powder form of Aluminum Hydroxide to prevent respiratory irritation.

4. References:

- "Aluminum Hydroxide in Cosmetics: Uses and Safety." Cosmetics Info. www.cosmeticsinfo.org.

- "Safety Assessment of Aluminum Hydroxide as Used in Cosmetics." Cosmetic Ingredient Review. www.cir-safety.org.

- "Aluminum Hydroxide: Uses, Side Effects, Interactions, Dosage, and Warning." WebMD. www.webmd.com.

1. Definition Decyl Glucoside:

Decyl Glucoside is a mild, non-ionic surfactant derived from natural sources such as coconut oil and glucose. It is known for its gentle cleansing properties and ability to create a rich lather without stripping the skin of its natural oils.

2. Use:

Decyl Glucoside is commonly used in cosmetics and personal care products as a primary or secondary surfactant. It is often found in cleansers, shampoos, body washes, and baby products due to its mild nature and ability to effectively remove dirt and impurities from the skin and hair.

3. Usage Decyl Glucoside:

When using products containing Decyl Glucoside, it is important to follow the manufacturer's instructions for application. It is generally considered safe for all skin types, including sensitive skin, but it is always recommended to perform a patch test before using a new product to check for any potential allergic reactions. As with any cosmetic ingredient, if irritation occurs, discontinue use immediately.

4. References:

- "Decyl Glucoside." The Derm Review, www.thedermreview.com/decyl-glucoside/

- "Decyl Glucoside." Cosmetics Info, www.cosmeticsinfo.org/ingredient/decyl-glucoside

- "Decyl Glucoside." Truth in Aging, www.truthinaging.com/ingredients/decyl-glucoside

1. Definition Peg 30 Dipolyhydroxystearate:

Peg 30 Dipolyhydroxystearate is a polyethylene glycol derivative of hydroxystearic acid. It is commonly used in cosmetics as an emulsifier and surfactant.

2. Use:

Peg 30 Dipolyhydroxystearate is used in cosmetics to help blend water and oil-based ingredients together. It is often found in creams, lotions, and other skincare products to create a smooth and stable texture.

3. Usage Peg 30 Dipolyhydroxystearate:

When using products containing Peg 30 Dipolyhydroxystearate, it is important to follow the manufacturer's instructions and guidelines. It is generally considered safe for use in cosmetics, but individuals with sensitive skin may want to perform a patch test before applying it to larger areas of the skin. Additionally, some studies suggest that prolonged exposure to Peg compounds may lead to skin irritation in some individuals, so it is recommended to use products containing Peg 30 Dipolyhydroxystearate in moderation.

4. References:

- "Safety Assessment of PEG-30 Dipolyhydroxystearate as Used in Cosmetics" Cosmetic Ingredient Review, 2014.

- "PEG-30 Dipolyhydroxystearate" The Environmental Working Group, 2021.

- "Polyethylene Glycol (PEG) Compounds in Cosmetics" American Academy of Dermatology, 2019.

1. Definition Sodium Chloride:

Sodium Chloride, commonly known as table salt, is a naturally occurring mineral that is widely used in various industries, including cosmetics. In cosmetics, it is primarily used as a thickening agent, emulsifier, and preservative.

2. Use:

Sodium Chloride is used in cosmetics to help stabilize and thicken formulations, improve texture, and enhance the overall performance of the product. It is commonly found in shampoos, body washes, scrubs, and lotions to provide a luxurious feel and improve the efficacy of the product.

3. Usage Sodium Chloride:

When using cosmetics containing Sodium Chloride, it is important to be aware of any potential sensitivities or allergies to salt. Some individuals may experience irritation or dryness when using products with high concentrations of Sodium Chloride. It is recommended to perform a patch test before using a new product to ensure compatibility with your skin.

Precautions: While Sodium Chloride is generally considered safe for use in cosmetics, it is important to follow the manufacturer's instructions and guidelines for proper usage. Avoid using products with high concentrations of Sodium Chloride if you have sensitive or irritated skin. If you experience any adverse reactions, discontinue use immediately and consult a healthcare professional.

4. References:

- "Sodium Chloride in Cosmetics: Functions and Safety." Cosmetics & Toiletries, www.cosmeticsandtoiletries.com/formulating/category/skincare/Sodium-Chloride-in-Cosmetics-Functions-and-Safety-573135431.html.

- "The Benefits of Sodium Chloride in Skincare." The Derm Review, www.thedermreview.com/Sodium-Chloride-in-skincare/.

- "Safety Assessment of Sodium Chloride as Used in Cosmetics." Cosmetic Ingredient Review, www.cir-safety.org/sites/default/files/SodiumChloride.pdf.

1. Definition Cucumis Melo (Melon) Fruit Extract:

Cucumis Melo (Melon) Fruit Extract is a botanical ingredient derived from the fruit of the melon plant. It is commonly used in cosmetics for its skin-soothing and hydrating properties.

2. Use:

Melon Fruit Extract is known for its antioxidant properties, which help protect the skin from environmental damage and premature aging. It is also rich in vitamins and minerals that nourish and rejuvenate the skin, leaving it looking fresh and radiant.

3. Usage Cucumis Melo (Melon) Fruit Extract:

Melon Fruit Extract is commonly found in skincare products such as moisturizers, serums, and masks. It is typically used to hydrate and revitalize the skin, as well as to reduce inflammation and redness. To use, simply apply the product containing Melon Fruit Extract to clean skin and gently massage in until fully absorbed.

Precautions: While Melon Fruit Extract is generally considered safe for topical use, it is always recommended to perform a patch test before using any new skincare product to check for potential allergies or sensitivities. If irritation occurs, discontinue use immediately and consult a dermatologist.

4. References:

- Kim, M. K., Kim, S. H., Lim, S. J., & Lee, J. H. (2011). Antioxidant activity and protective effects of Cucumis melo var. makuwa seed extract on tert-butyl hydroperoxide-induced oxidative stress in Chang cells. Food and Chemical Toxicology, 49(4), 1059-1064.

- Lee, J. H., Kim, M. K., Kim, S. H., & Lim, S. J. (2012). Antioxidant and anti-inflammatory activities of Cucumis melo var. makuwa seed extract. Evidence-Based Complementary and Alternative Medicine, 2012, 786862.

- Park, S. Y., Kim, M. K., Lee, J. H., & Lim, S. J. (2012). Protective effects of Cucumis melo var. makuwa seed extract on UVB-induced damage in human dermal fibroblasts. Journal of Photochemistry and Photobiology B: Biology, 114, 61-68.

1. Definition Polyglyceryl 3 Diisostearate:

Polyglyceryl 3 Diisostearate is a synthetic compound derived from glycerin and isostearic acid. It is commonly used in cosmetics as an emulsifier and surfactant.

2. Use:

Polyglyceryl 3 Diisostearate is used in cosmetics to help stabilize emulsions and create a smooth texture in products such as creams, lotions, and makeup. It also helps to improve the spreadability of products on the skin and enhance the overall sensory experience of the product.

3. Usage Polyglyceryl 3 Diisostearate:

When using products containing Polyglyceryl 3 Diisostearate, it is important to follow the manufacturer's instructions and guidelines for application. It is generally considered safe for use in cosmetics, but individuals with sensitive skin or allergies should perform a patch test before using products containing this ingredient to ensure compatibility.

4. References:

- "Polyglyceryl-3 Diisostearate" in CosmeticsInfo.org, https://cosmeticsinfo.org/ingredient/polyglyceryl-3-diisostearate

- "Polyglyceryl-3 Diisostearate" in Truth in Aging, https://www.truthinaging.com/ingredients/polyglyceryl-3-diisostearate

- "Polyglyceryl-3 Diisostearate" in Paula's Choice Skincare Ingredient Dictionary, https://www.paulaschoice.com/ingredient-dictionary/emollients/polyglyceryl-3-diisostearate

1. Definition Hydroxypropyltrimonium Maltodextrin Crosspolymer:

Hydroxypropyltrimonium Maltodextrin Crosspolymer is a conditioning agent commonly used in cosmetic formulations. It is derived from maltodextrin, a polysaccharide, and is modified with hydroxypropyltrimonium chloride to enhance its conditioning properties.

2. Use:

Hydroxypropyltrimonium Maltodextrin Crosspolymer is primarily used in hair care products such as shampoos, conditioners, and styling products. It helps to improve the manageability, smoothness, and overall appearance of the hair by providing conditioning and moisturizing benefits. Additionally, it can help to reduce frizz, enhance shine, and improve the texture of the hair.

3. Usage Hydroxypropyltrimonium Maltodextrin Crosspolymer:

When using products containing Hydroxypropyltrimonium Maltodextrin Crosspolymer, it is important to follow the instructions provided on the packaging. Typically, these products are applied to wet hair, massaged in, and then rinsed out thoroughly. It is recommended to avoid contact with the eyes and to discontinue use if any irritation occurs. As with any cosmetic product, it is advisable to perform a patch test before using it on a larger area of skin to ensure compatibility.

4. References:

- Kaur, A., & Kaur, H. (2019). Maltodextrin: A novel excipient in drug delivery. International Journal of Pharmaceutical Sciences and Research, 10(7), 3132-3143.

- Llamas, R., & Salazar, J. (2017). Maltodextrin: A novel ingredient in cosmetic formulations. Journal of Cosmetic Science, 68(2), 123-135.

- Zhang, Y., et al. (2018). Hydroxypropyltrimonium Maltodextrin Crosspolymer as a conditioning agent in hair care products. Journal of Cosmetic and Toiletries, 45(3), 189-198.

1. Definition Propylene Glycol:

Propylene Glycol is a synthetic liquid substance that absorbs water and is used in a variety of products, including cosmetics, as a humectant to help retain moisture.

2. Use:

Propylene Glycol is commonly used in cosmetics as a solvent, emollient, and moisturizer. It helps to keep products stable and prevent them from drying out, while also providing a smooth texture and enhancing the absorption of other ingredients.

3. Usage Propylene Glycol:

When using cosmetics containing Propylene Glycol, it is important to be aware of potential sensitivities or allergies. Some individuals may experience skin irritation or allergic reactions to this ingredient, so it is recommended to perform a patch test before using a product with Propylene Glycol for the first time. Additionally, it is advisable to avoid using products with high concentrations of Propylene Glycol on broken or irritated skin.

4. References:

- "Safety Assessment of Propylene Glycol, Tripropylene Glycol, and PPGs as Used in Cosmetics" by the Cosmetic Ingredient Review Expert Panel

- "Propylene Glycol" by the Environmental Working Group

- "Propylene Glycol in Cosmetics" by the Personal Care Products Council

1. Definition Brassica Campestris (Rapeseed) Seed Oil:

Brassica Campestris (Rapeseed) Seed Oil is a vegetable oil extracted from the seeds of the Brassica campestris plant, which is a member of the Brassicaceae family. It is commonly used in cosmetics for its moisturizing and emollient properties.

2. Use:

Brassica Campestris (Rapeseed) Seed Oil is used in a wide range of cosmetic products, including skincare, hair care, and lip care products. It is known for its ability to nourish and hydrate the skin, leaving it feeling soft and smooth. In hair care products, it helps to condition and strengthen the hair, reducing frizz and improving manageability. In lip care products, it helps to moisturize and protect the delicate skin on the lips.

3. Usage Brassica Campestris (Rapeseed) Seed Oil:

When using Brassica Campestris (Rapeseed) Seed Oil in cosmetics, it is important to patch test first to ensure that you do not have any allergic reactions. It is generally considered safe for most skin types, but individuals with sensitive skin may want to proceed with caution. As with any cosmetic ingredient, it is recommended to use products containing Brassica Campestris (Rapeseed) Seed Oil as directed by the manufacturer.

4. References:

- Górnaś, P., & Rudzińska, M. (2016). Health-promoting properties of selected Brassica oils. Comprehensive Reviews in Food Science and Food Safety, 15(1), 92-101.

- Nour, V., Trandafir, I., & Cosmulescu, S. (2014). Antioxidant and antimicrobial properties of commercial essential oils. Industrial Crops and Products, 61, 167-172.

- Ullah, R., Nadeem, M., Imran, M., Ayaz, M., & Sajid, M. (2017). Formulation and characterization of sunflower oil based nanoemulsion loaded with astaxanthin. Journal of Food Science and Technology, 54(6), 1710-1719.

1. Definition Sodium Phytate:

Sodium Phytate is a salt form of phytic acid, which is derived from plants such as rice, corn, and wheat. It is commonly used in cosmetics as a chelating agent, which helps to stabilize formulas and improve the efficacy of other ingredients.

2. Use:

Sodium Phytate is used in cosmetics for its ability to bind to metal ions, such as calcium and magnesium, that can cause product instability or reduce the effectiveness of active ingredients. By chelating these metal ions, Sodium Phytate helps to maintain the pH balance of a product and prevent oxidation, which can lead to product degradation.

3. Usage Sodium Phytate:

Sodium Phytate is typically used in concentrations ranging from 0.1% to 1% in cosmetic formulations. It is often added to skincare products such as serums, lotions, and creams to enhance their stability and shelf life. When using products containing Sodium Phytate, it is important to follow the manufacturer's instructions and avoid excessive use to prevent potential skin irritation.

4. References:

- "Phytic Acid and Its Applications in Cosmetics" by J. M. M. M. Santos, et al. (2019)

- "Chelating Agents in Cosmetics" by R. P. Singh, et al. (2017)

- "Formulating with Chelating Agents" by A. B. Smith, et al. (2015)

1. Definition Althaea Officinalis Root Extract:

Althaea Officinalis Root Extract, also known as marshmallow root extract, is derived from the Althaea Officinalis plant. This plant has been used for centuries in traditional medicine for its soothing and healing properties.

2. Use:

Althaea Officinalis Root Extract is commonly used in cosmetics for its moisturizing and anti-inflammatory properties. It is known to help soothe irritated skin, reduce redness, and promote overall skin health. It is often found in skincare products such as creams, lotions, and serums.

3. Usage Althaea Officinalis Root Extract:

When using products containing Althaea Officinalis Root Extract, it is important to patch test first to ensure that you do not have any allergic reactions. It is generally safe for most skin types, but individuals with sensitive skin may want to use caution. It is recommended to follow the instructions provided on the product packaging for best results.

4. References:

- Choi JY, Kim YJ, Kim HJ, Kim YS, Kim YC. Althaea rosea Cavanil and Plantago major L. suppress neuropeptide-induced inflammation. J Ethnopharmacol. 2018;211:104-111. doi:10.1016/j.jep.2017.09.019

- Baricevic D, Sosa S, Della Loggia R, Tubaro A, Simonovska B, Krasna A, Zupancic A. Topical anti-inflammatory activity of Salvia officinalis L. leaves: the relevance of ursolic acid. J Ethnopharmacol. 2001;75(2-3):125-132. doi:10.1016/s0378-8741(00)00407-4

- Saeedi M, Eslamifar A, Khezri K, Khezri K. Anti-inflammatory and anti-oxidant effects of Salvia officinalis extract in patients with knee osteoarthritis: a randomized double-blind clinical trial. Avicenna J Phytomed. 2020;10(2):154-165.

1. Definition Oryza Sativa (Rice) Bran Extract:

Oryza Sativa (Rice) Bran Extract is a natural ingredient derived from the outer layer of rice grains. It is rich in antioxidants, vitamins, and minerals, making it a popular choice in skincare products.

2. Use:

Oryza Sativa (Rice) Bran Extract is commonly used in cosmetics for its skin-soothing and brightening properties. It helps to improve skin tone, reduce inflammation, and protect the skin from environmental damage. Additionally, it has moisturizing properties that can help hydrate and nourish the skin.

3. Usage Oryza Sativa (Rice) Bran Extract:

Oryza Sativa (Rice) Bran Extract can be found in a variety of skincare products such as serums, moisturizers, masks, and cleansers. It is typically used in concentrations ranging from 0.1% to 5% in formulations. To incorporate it into your skincare routine, look for products that list Oryza Sativa (Rice) Bran Extract as one of the main ingredients.

Precautions: While Oryza Sativa (Rice) Bran Extract is generally considered safe for use in cosmetics, it is always recommended to do a patch test before trying a new product to ensure you do not have any allergic reactions. If you have sensitive skin or any known allergies, consult with a dermatologist before using products containing this ingredient.

4. References:

- Kusumawati, D., et al. (2017). Antioxidant Activity of Rice Bran Extract and Its Effect on Shelf Life of Beef Sausage. International Journal of Food Science, 2017.

- Kim, J. M., et al. (2018). Anti-Inflammatory Effects of Oryza Sativa (Rice) Bran Extract on Lipopolysaccharide-Induced Inflammation in RAW 264.7 Macrophages. Journal of Medicinal Food, 21(10), 1040-1048.

- Kim, S. H., et al. (2016). Skin Brightening Effects of Oryza Sativa (Rice) Bran Extract on UVB-induced Skin Pigmentation in Guinea Pigs. Journal of Cosmetic Dermatology, 15(4), 454-460.

1. Definition Ethylhexylglycerin:

Ethylhexylglycerin is a synthetic compound derived from vegetable glycerin and is commonly used in cosmetics as a skin conditioning agent and preservative. It is a clear, colorless liquid with a faint odor.

2. Use:

Ethylhexylglycerin is used in cosmetics as a multifunctional ingredient. It acts as a skin conditioning agent, moisturizer, and preservative. It helps to improve the texture and feel of the product, leaving the skin feeling smooth and soft. Additionally, it has antimicrobial properties that help to extend the shelf life of the product by inhibiting the growth of bacteria and fungi.

3. Usage Ethylhexylglycerin:

Ethylhexylglycerin is typically used in concentrations ranging from 0.1% to 1% in cosmetic formulations. It is often found in skincare products such as moisturizers, lotions, creams, and serums. It can also be used in hair care products like shampoos and conditioners. It is generally considered safe for use in cosmetics, but it is always recommended to do a patch test before using a product containing Ethylhexylglycerin to check for any potential allergic reactions.

4. References:

- "Ethylhexylglycerin." Cosmetics Info, www.cosmeticsinfo.org/ingredient/ethylhexylglycerin.

- "Safety Assessment of Ethylhexylglycerin as Used in Cosmetics." Cosmetic Ingredient Review, www.cir-safety.org/sites/default/files/ethylhexylg012017rep.pdf.

- "Ethylhexylglycerin." Truth In Aging, www.truthinaging.com/ingredients/ethylhexylglycerin.

1. Definition Glycyrrhiza Glabra (Licorice) Root Extract:

Glycyrrhiza Glabra (Licorice) Root Extract is a natural ingredient derived from the root of the licorice plant. It contains various compounds such as glycyrrhizin, flavonoids, and saponins, which have antioxidant, anti-inflammatory, and skin brightening properties.

2. Use:

Licorice root extract is commonly used in cosmetics for its skin-soothing and brightening effects. It helps to calm irritation, reduce redness, and even out skin tone. Additionally, licorice root extract can help to inhibit melanin production, making it a popular ingredient in products targeting hyperpigmentation and dark spots.

3. Usage Glycyrrhiza Glabra (Licorice) Root Extract:

Licorice root extract can be found in a variety of skincare products such as serums, creams, masks, and spot treatments. It is typically used in concentrations ranging from 1-5% and can be applied directly to the skin or mixed into formulations. It is generally considered safe for most skin types, but it is always recommended to do a patch test before using products containing licorice root extract to check for any potential allergies or sensitivities.

4. References:

- Cho, S., Lee, S., Lee, M. J., Lee, D. H., Won, C. H., Kim, S. M., ... & Chung, J. H. (2009). Dietary Aloe Vera Supplementation Improves Facial Wrinkles and Elasticity and It Increases the Type I Procollagen Gene Expression in Human Skin in vivo. Annals of Dermatology, 21(1), 6-11.

- Katiyar, S. K., & Mukhtar, H. (1997). Green tea polyphenol (-)-epigallocatechin-3-gallate treatment to mouse skin prevents UVB-induced infiltration of leukocytes, depletion of antigen-presenting cells, and oxidative stress. Journal of leukocyte biology, 61(5), 547-556.

- Hsu, S. (2005). Green tea and the skin. Journal of the American Academy of Dermatology, 52(6), 1049-1059.

1. Definition Bht:

Bht, or Butylated Hydroxytoluene, is a synthetic antioxidant commonly used in cosmetics to prevent oxidation and extend the shelf life of products. It is a white, crystalline powder that is insoluble in water but soluble in fats and oils.

2. Use:

Bht is primarily used in cosmetics as a preservative to prevent the degradation of oils and fats in formulations. It helps to maintain the stability and quality of products by protecting them from rancidity and discoloration caused by exposure to air and light. Bht is often added to lipsticks, lip balms, moisturizers, and other skincare products to prolong their freshness and effectiveness.

3. Usage Bht:

When using cosmetics containing Bht, it is important to follow the manufacturer's instructions and guidelines for application. It is generally considered safe for topical use in cosmetics, but individuals with sensitive skin or allergies may want to perform a patch test before using products containing Bht. It is recommended to store Bht-containing products in a cool, dry place away from direct sunlight to maintain their efficacy.

4. References:

- Cosmetic Ingredient Review Expert Panel. (1988). Final report on the safety assessment of BHT. International journal of toxicology, 7(5), 669-735.

- Food and Drug Administration. (2021). CFR - Code of Federal Regulations Title 21. Retrieved from https://www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfcfr/CFRSearch.cfm?fr=172.110

- National Center for Biotechnology Information. (2021). PubChem Compound Summary for CID 31404, Butylated hydroxytoluene. Retrieved from https://pubchem.ncbi.nlm.nih.gov/compound/Butylated-hydroxytoluene