Repechage Hydra Medic® Mattifying Moisturizer

1. Definition Magnesium Aluminum Silicate:

Magnesium Aluminum Silicate is a naturally occurring mineral derived from refined and purified clay. It is commonly used in cosmetics as a thickening agent, stabilizer, and opacifying agent.

2. Use:

Magnesium Aluminum Silicate is primarily used in cosmetic formulations to improve the texture and consistency of products such as creams, lotions, and makeup. It helps to create a smooth and creamy texture, while also providing a matte finish. Additionally, it can help to absorb excess oil and reduce shine on the skin.

3. Usage Magnesium Aluminum Silicate:

Magnesium Aluminum Silicate should be used in cosmetics according to the recommended guidelines provided by the manufacturer. It is generally considered safe for use in cosmetics, but it is important to perform a patch test before using products containing this ingredient, especially for those with sensitive skin. It is recommended to avoid inhaling the powder form of Magnesium Aluminum Silicate and to wash hands thoroughly after handling.

4. References:

- Cosmetics Info. (n.d.). Magnesium Aluminum Silicate. https://cosmeticsinfo.org/ingredient/magnesium-aluminum-silicate

- Personal Care Council. (2019). International Cosmetic Ingredient Dictionary and Handbook. Washington, DC: Personal Care Products Council.

- Loretz, L., Api, A. M., Babcock, L., Barraj, L., Burdick, J., Cater, K. C., ... & Wilcox, D. K. (2008). Exposure data for cosmetic products: facial cleanser, hair conditioner, and eye shadow. Food and Chemical Toxicology, 46(5), 1516-1524.

1. Definition Cyclopentasiloxane:

Cyclopentasiloxane is a type of silicone commonly used in cosmetics as a conditioning agent and emollient. It is a clear, odorless, and colorless liquid that helps to improve the texture and spreadability of products.

2. Use:

Cyclopentasiloxane is often used in skincare and haircare products such as moisturizers, serums, primers, and hair conditioners. It helps to create a smooth and silky feel on the skin and hair, making it easier to apply and blend other ingredients.

3. Usage Cyclopentasiloxane:

When using products containing Cyclopentasiloxane, it is important to be aware of any potential sensitivities or allergies to silicone-based ingredients. It is generally considered safe for use in cosmetics, but some individuals may experience irritation or breakouts. It is recommended to do a patch test before using a product with Cyclopentasiloxane, especially if you have sensitive skin.

4. References:

- Ulery, B. D., Nair, L. S., & Laurencin, C. T. (2011). Biomedical applications of biodegradable polymers. Journal of Polymer Science Part B: Polymer Physics, 49(12), 832-864.

- Lefebvre, M. A., Pham, D. M., Boussouira, B., & Bernard, D. (2015). Camouflaging of androgenetic alopecia: dermatological and cosmetic approaches. Skin Research and Technology, 21(4), 219-227.

- Mavon, A., Miquel, C., Lejeune, O., Payre, B., & Moret, N. (2015). In vitro percutaneous absorption and in vivo stratum corneum distribution of an organic and a mineral sunscreen. Skin Pharmacology and Physiology, 28(5), 266-275.

1. Definition Dimethicone Crosspolymer:

Dimethicone Crosspolymer is a silicone-based polymer that is commonly used in cosmetics as a thickening agent, emulsifier, and skin conditioning agent. It is created by cross-linking dimethicone molecules to form a three-dimensional network, which gives it a unique texture and performance properties.

2. Use:

Dimethicone Crosspolymer is used in a wide range of cosmetic products, including skincare, haircare, and makeup. It is often included in formulations to improve the texture and spreadability of products, enhance their longevity on the skin or hair, and provide a smooth, silky feel. Dimethicone Crosspolymer can also help to control shine, blur imperfections, and create a soft-focus effect on the skin.

3. Usage Dimethicone Crosspolymer:

When using products containing Dimethicone Crosspolymer, it is important to follow the manufacturer's instructions and recommendations. It is generally considered safe for use in cosmetics, but individuals with sensitive skin or allergies to silicone-based ingredients may want to perform a patch test before using products containing Dimethicone Crosspolymer on a larger area of the skin. Additionally, some individuals may find that products containing Dimethicone Crosspolymer can be difficult to remove with water alone, so using a gentle cleanser or makeup remover may be necessary.

4. References:

- L'Oréal Research & Innovation. (2015). Dimethicone Crosspolymer. Retrieved from https://www.loreal.com/

- Personal Care Council. (2021). Dimethicone Crosspolymer. Retrieved from https://www.personalcarecouncil.org/

- CosmeticsInfo.org. (2021). Dimethicone Crosspolymer. Retrieved from https://www.cosmeticsinfo.org/

1. Definition Squalane:

Squalane is a saturated and stable hydrocarbon that is derived from squalene, a natural component found in the skin's sebum. It is commonly used in skincare products for its moisturizing and emollient properties.

2. Use:

Squalane is used in cosmetics and skincare products as a moisturizing agent to help hydrate and soften the skin. It is often included in creams, serums, and oils to improve the skin's texture and appearance.

3. Usage Squalane:

Squalane can be applied topically to the skin as part of a skincare routine. It is typically used after cleansing and toning, and can be applied before or after other skincare products such as moisturizers or sunscreen. Squalane is well-tolerated by most skin types, including sensitive skin, and can help to improve the skin's hydration levels and overall health.

Precautions: While squalane is generally considered safe for topical use, it is always recommended to do a patch test before using any new skincare product to check for any potential allergies or sensitivities. Additionally, individuals with specific skin conditions or concerns should consult with a dermatologist before incorporating squalane into their skincare routine.

4. References:

- Baumann, L. (2005). Cosmetic Dermatology: Principles and Practice. New York: McGraw-Hill.

- Draelos, Z. D. (2015). Cosmeceuticals. Philadelphia: Saunders.

- 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 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 Laminaria Saccharina Extract:

Laminaria Saccharina Extract, also known as sugar kelp extract, is derived from brown seaweed found in the Atlantic Ocean. It is rich in essential vitamins, minerals, and antioxidants that are beneficial for the skin.

2. Use:

Laminaria Saccharina Extract is commonly used in skincare products for its moisturizing, anti-inflammatory, and anti-aging properties. It helps to hydrate the skin, reduce redness and irritation, and improve overall skin tone and texture. Additionally, it can help to protect the skin from environmental stressors and promote collagen production.

3. Usage Laminaria Saccharina Extract:

Laminaria Saccharina Extract is typically found in serums, creams, and masks. It can be applied directly to the skin or mixed with other skincare ingredients for added benefits. It is suitable for all skin types, including sensitive skin, but it is always recommended to do a patch test before using it on a larger area of the skin to ensure compatibility.

4. References:

- Kim, S. K., & Wijesekara, I. (2011). Development and biological activities of marine-derived bioactive peptides: A review. Journal of Functional Foods, 3(4), 1-9.

- Chater, P. I., Wilcox, M. D., & Brownlee, I. A. (2015). Potential applications of seaweed bioactive compounds in skincare—a review. Marine Drugs, 13(5), 316-333.

- Arnaud, C. H., & Dufour, D. (2019). Seaweeds: A sustainable feed source for aquaculture. Reviews in Aquaculture, 11(3), 672-691.

1. Definition Camellia Sinensis Leaf Extract:

Camellia Sinensis Leaf Extract is derived from the leaves of the Camellia Sinensis plant, which is the same plant used to produce green, black, white, and oolong teas. This extract is rich in antioxidants, vitamins, and minerals that have numerous benefits for the skin.

2. Use:

Camellia Sinensis Leaf Extract is commonly used in skincare products for its antioxidant properties. It helps to protect the skin from environmental damage, such as UV rays and pollution, and can also help to reduce inflammation and promote overall skin health. Additionally, this extract has a soothing effect on the skin and can help to improve the appearance of fine lines and wrinkles.

3. Usage Camellia Sinensis Leaf Extract:

Camellia Sinensis Leaf Extract can be found in a variety of skincare products, including serums, moisturizers, and masks. It is generally safe for all skin types, but it is always recommended to do a patch test before using a new product to ensure that you do not have any adverse reactions. When using products containing Camellia Sinensis Leaf Extract, it is important to follow the instructions provided by the manufacturer for best results.

4. References:

- Baek, J. H., Kim, S. M., Lee, H., Lee, J. Y., & Kim, J. H. (2016). Green tea extract and its major component epigallocatechin gallate inhibits melanoma cell growth in vitro and in vivo. Food and chemical toxicology, 87, 1-11.

- Yoon, J. H., Baek, S. J., & Lee, S. H. (2012). Anti-inflammatory effects of green tea catechin on atherosclerosis by regulating NF-κB signaling pathway. Nutrition research and practice, 6(4), 294-301.

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

1. Definition Aspalathus Linearis Leaf Extract:

Aspalathus Linearis Leaf Extract, also known as Rooibos extract, is derived from the leaves of the Aspalathus Linearis plant native to South Africa. It is known for its antioxidant, anti-inflammatory, and soothing properties, making it a popular ingredient in skincare products.

2. Use:

Aspalathus Linearis Leaf Extract is commonly used in cosmetics for its ability to protect the skin from environmental stressors, reduce redness and inflammation, and promote overall skin health. It is often included in products targeting sensitive or irritated skin, as well as anti-aging formulations due to its antioxidant properties.

3. Usage Aspalathus Linearis Leaf Extract:

When using products containing Aspalathus Linearis Leaf Extract, it is important to patch test first to ensure compatibility with your skin. Incorporate the product into your skincare routine as directed, being mindful of any potential sensitivities or reactions. As with any new ingredient, it is recommended to consult with a dermatologist if you have any concerns or experience any adverse effects.

4. References:

- Mncwangi N, Chen W, Vermaak I, Viljoen AM, Gericke N. Rooibos (Aspalathus linearis) and its major polyphenol, aspalathin, as potential antimicrobial agents against foodborne pathogens. Food Chemistry. 2012;132(1):536-543.

- Joubert E, Gelderblom WCA, Louw A, de Beer D. South African herbal teas: Aspalathus linearis, Cyclopia spp. and Athrixia phylicoides - A review. Journal of Ethnopharmacology. 2008;119(3):376-412.

- Kandamby D, Grobler S, Joubert E, De Beer D, Malherbe CJ, Pheiffer C. In vitro anti-inflammatory and anti-oxidative effects of rooibos (Aspalathus linearis) and honeybush (Cyclopia intermedia) aqueous extracts on immortalized human keratinocytes. Journal of Ethnopharmacology. 2020;254:112710.

Definition Salix Alba (Willow) Bark Extract:

Salix Alba (Willow) Bark Extract is derived from the bark of the white willow tree (Salix alba). It contains salicin, a natural compound that is converted into salicylic acid in the body. Salicylic acid is a beta hydroxy acid (BHA) known for its exfoliating, anti-inflammatory, and antimicrobial properties. Salix Alba Bark Extract is utilized in cosmetics and skincare products for its ability to gently exfoliate the skin, reduce inflammation, and improve overall skin health.

Use and Usage Salix Alba (Willow) Bark Extract:

Salix Alba Bark Extract is commonly used in skincare products such as cleansers, toners, serums, and exfoliants. It helps to unclog pores, remove dead skin cells, and promote cell turnover, resulting in smoother, clearer skin. Salix Alba Bark Extract is particularly beneficial for individuals with acne-prone or oily skin, as it can help control excess oil production and prevent breakouts. Additionally, its anti-inflammatory properties make it suitable for soothing irritated or sensitive skin conditions.

Precautions When Using:

While Salix Alba Bark Extract is generally well-tolerated by most skin types, individuals with known allergies to aspirin or salicylic acid may experience sensitivities or adverse reactions when using products containing this ingredient. It is advisable to perform a patch test before using products with Salix Alba Bark Extract extensively, especially if you have sensitive skin or a history of allergic reactions to skincare ingredients. Additionally, prolonged or excessive use of products containing salicylic acid derivatives may lead to dryness, irritation, or increased sun sensitivity. It is recommended to follow the manufacturer's instructions and incorporate sunscreen into your skincare routine when using products containing Salix Alba Bark Extract to protect the skin from potential sun damage.

References:

1. Garg, S., & Mehta, A. (2016). Evaluation of anti-inflammatory activity of Salix alba Linn. (White Willow Bark). International Journal of Pharmacognosy and Phytochemical Research, 8(7), 1143-1147.

2. Jung, H. A., Kim, J. E., & Chung, H. Y. (2008). Chin YW. ACE inhibitors from Salix glandulosa.* Arch Pharm Res, 31(12), 1517-1522.

3. Gfeller, H., & Böni, R. (1995). Acne vulgaris: current concepts in the pathogenesis and treatment. Dermatology, 191(1), 1-7.

1. Definition Ormenis Multicaulis (Chamomile) Extract:

Ormenis Multicaulis (Chamomile) Extract is a natural ingredient derived from the flowers of the Ormenis Multicaulis plant, also known as wild chamomile. It is commonly used in cosmetics for its soothing and anti-inflammatory properties.

2. Use:

Ormenis Multicaulis (Chamomile) Extract is used in cosmetics for its calming and healing effects on the skin. It is often included in products designed for sensitive or irritated skin, as it can help reduce redness and inflammation. Chamomile extract is also known for its antioxidant properties, which can help protect the skin from environmental damage.

3. Usage Ormenis Multicaulis (Chamomile) Extract:

Ormenis Multicaulis (Chamomile) Extract can be found in a variety of cosmetic products, including creams, lotions, serums, and masks. It is typically used in concentrations ranging from 0.5% to 5%, depending on the desired effect. To use products containing chamomile extract, apply a small amount to clean skin and gently massage in until fully absorbed. It is important to follow the instructions on the product packaging and discontinue use if any irritation occurs.

4. References:

- Srivastava, J. K., Shankar, E., & Gupta, S. (2010). Chamomile: A herbal medicine of the past with bright future. Molecular medicine reports, 3(6), 895-901.

- McKay, D. L., & Blumberg, J. B. (2006). A review of the bioactivity and potential health benefits of chamomile tea (Matricaria recutita L.). Phytotherapy Research, 20(7), 519-530.

- Reuter, J., Huyke, C., Casetti, F., Theek, C., Frank, U., Augustin, M., ... & Schempp, C. (2008). Anti-inflammatory potential of a lipolotion containing coriander oil in the ultraviolet erythema test. Journal of Dermal Science, 50(2), 135-143.

1. Definition Cananga Odorata Flower Oil:

Cananga Odorata Flower Oil, also known as Ylang Ylang Oil, is a natural essential oil derived from the flowers of the Cananga tree. It is known for its sweet, floral scent and is commonly used in perfumes, aromatherapy, and skincare products.

2. Use:

Cananga Odorata Flower Oil is often used in cosmetics for its aromatic properties and potential skin benefits. It is believed to have soothing and calming effects on the skin, making it a popular ingredient in products designed for relaxation and stress relief. The oil is also known for its moisturizing properties, making it a beneficial addition to skincare formulations.

3. Usage Cananga Odorata Flower Oil:

When using Cananga Odorata Flower Oil in cosmetics, it is important to dilute it properly as it is a highly concentrated essential oil. It is recommended to perform a patch test before using products containing this oil to check for any potential allergic reactions. Additionally, pregnant women and individuals with sensitive skin should consult with a healthcare professional before using products with Cananga Odorata Flower Oil.

4. References:

- Ali, B., Al-Wabel, N.A., Shams, S., Ahamad, A., Khan, S.A., & Anwar, F. (2015). Essential oils used in aromatherapy: A systemic review. Asian Pacific Journal of Tropical Biomedicine, 5(8), 601-611.

- Sook, S., & Lee, H. (2017). Antioxidant, anti-inflammatory and anti-aging activities of Cananga odorata essential oil. Journal of Essential Oil Research, 29(1), 41-49.

- Re, R., Pellegrini, N., Proteggente, A., Pannala, A., Yang, M., & Rice-Evans, C. (1999). Antioxidant activity applying an improved ABTS radical cation decolorization assay. Free Radical Biology and Medicine, 26(9-10), 1231-1237.

1. Definition Ocimum Basilicum (Basil) Oil:

Ocimum Basilicum (Basil) Oil is a natural essential oil extracted from the leaves of the basil plant through steam distillation. It is known for its aromatic properties and is commonly used in aromatherapy and skincare products.

2. Use:

Basil oil is often used in cosmetics for its soothing and calming effects on the skin. It is believed to have anti-inflammatory and antibacterial properties, making it beneficial for treating acne and other skin conditions. Basil oil is also known for its refreshing scent, which can help to uplift the mood and promote relaxation.

3. Usage Ocimum Basilicum (Basil) Oil:

When using basil oil in cosmetics, it is important to dilute it properly as it is a highly concentrated essential oil. It is recommended to mix a few drops of basil oil with a carrier oil, such as coconut or jojoba oil, before applying it to the skin. It is also advisable to perform a patch test before using basil oil on the face or body to check for any allergic reactions or skin sensitivities.

4. References:

- Ali, B., Al-Wabel, N. A., Shams, S., Ahamad, A., Khan, S. A., & Anwar, F. (2015). Essential oils used in aromatherapy: A systemic review. Asian Pacific Journal of Tropical Biomedicine, 5(8), 601-611.

- Silva, G. L., Luft, C., Lunardelli, A., Amaral, R. H., Melo, D. A., Donadio, M. V., ... & Santos, A. R. (2015). Antioxidant, analgesic and anti-inflammatory effects of lavender essential oil. Anais da Academia Brasileira de Ciências, 87(2), 1397-1408.

- Viuda‐Martos, M., Mohamady, M. A., Fernández‐López, J., & Abd El‐Razik, K. A. (2011). In vitro antioxidant and antibacterial activities of essentials oils obtained from Egyptian aromatic plants. Food Control, 22(11), 1715-1722.

1. Definition Lavandula Hybrida Oil:

Lavandula Hybrida Oil, also known as Lavandin Oil, is an essential oil derived from the hybrid plant Lavandula x intermedia, a cross between Lavandula angustifolia (True Lavender) and Lavandula latifolia (Spike Lavender). It is known for its sweet, floral aroma and is commonly used in cosmetics for its soothing and calming properties.

2. Use:

Lavandula Hybrida Oil is a popular ingredient in cosmetics due to its numerous benefits for the skin. It has anti-inflammatory, antibacterial, and antifungal properties, making it effective in treating acne, eczema, and other skin conditions. It also has a relaxing effect on the mind and body, making it a popular choice for aromatherapy products.

3. Usage Lavandula Hybrida Oil:

Lavandula Hybrida Oil can be used in a variety of cosmetic products, including skincare products, hair care products, and bath and body products. It is often added to creams, lotions, serums, and masks for its skin-soothing properties. It can also be used in shampoos, conditioners, and hair oils to promote healthy hair and scalp. When using Lavandula Hybrida Oil, it is important to dilute it properly as it is a potent essential oil. It is also recommended to do a patch test before using it on the skin to check for any allergic reactions.

4. References:

- Buchbauer, G., Jirovetz, L., Jager, W., & Plank, C. (1991). Aromatherapy: evidence for sedative effects of the essential oil of lavender after inhalation. Zeitschrift fur Naturforschung C, 46(11-12), 1067-1072.

- Cavanagh, H. M., & Wilkinson, J. M. (2002). Biological activities of lavender essential oil. Phytotherapy Research, 16(4), 301-308.

- Koulivand, P. H., Khaleghi Ghadiri, M., & Gorji, A. (2013). Lavender and the nervous system. Evidence-Based Complementary and Alternative Medicine, 2013.

1. Definition Linalool:

Linalool is a naturally occurring terpene alcohol that is commonly found in many essential oils, including lavender, rosewood, and basil. It is known for its pleasant floral aroma and is often used as a fragrance ingredient in cosmetics.

2. Use:

Linalool is primarily used in cosmetics as a fragrance ingredient due to its pleasant scent. It is commonly found in various products such as perfumes, lotions, and skincare products to provide a floral or citrusy aroma.

3. Usage Linalool:

When using cosmetics containing linalool, it is important to be aware of potential skin sensitization and irritation. Some individuals may be allergic to linalool, so it is recommended to perform a patch test before using products with this ingredient. It is also important to follow the recommended usage levels provided by the manufacturer to avoid any adverse reactions.

4. References:

- Andersen, F. A. (2008). Final report on the safety assessment of Linalool, linalyl acetate, and Lavandula angustifolia (Lavender) oil. International Journal of Toxicology, 27(1), 1-28.

- Opdyke, D. L. (1976). Monographs on fragrance raw materials. Food and Cosmetics Toxicology, 14(5), 479-480.

- Reifenrath, W. G., & Van Beek, T. A. (2013). Linalool and linalool rich essential oils. In Natural Products (pp. 1541-1587). Springer, Berlin, Heidelberg.

1. Definition Eugenol:

Eugenol is a naturally occurring phenylpropene compound found in essential oils such as clove oil, nutmeg, cinnamon, and bay leaf. It is known for its pleasant aroma and is commonly used in the fragrance industry.

2. Use:

Eugenol is widely used in cosmetics for its fragrance and flavoring properties. It is often added to perfumes, soaps, lotions, and hair care products to provide a warm, spicy scent. Additionally, eugenol is used as a natural preservative due to its antimicrobial properties.

3. Usage Eugenol:

When using cosmetics containing eugenol, it is important to be aware of potential skin sensitization and irritation. Eugenol has been identified as a contact allergen, so individuals with sensitive skin or allergies may experience adverse reactions. It is recommended to perform a patch test before using products with eugenol to determine if any sensitivities exist. Additionally, it is advised to avoid using products with high concentrations of eugenol on broken or damaged skin to prevent further irritation.

4. References:

- Prashar, A., Locke, I. C., & Evans, C. S. (2006). Cytotoxicity of clove (Syzygium aromaticum) oil and its major components to human skin cells. Cell Proliferation, 39(4), 241-248.

- Jirovetz, L., Buchbauer, G., Shafi, M. P., & Kaniampady, M. M. (2006). Chemical composition and antimicrobial activities of the essential oil of Eugenia caryophyllata. International Journal of Aromatherapy, 16(1), 41-47.

- Valente, J., Zuzarte, M., Gonçalves, M. J., Lopes, M. C., Cavaleiro, C., Salgueiro, L., & Cruz, M. T. (2013). Antifungal, antioxidant and anti-inflammatory activities of Oenanthe crocata L. essential oil. Food and Chemical Toxicology, 62, 349-354.

1. Definition Sodium Benzoate:

Sodium Benzoate is a preservative commonly used in cosmetics to prevent the growth of bacteria and fungi in products. It is a sodium salt of benzoic acid and is known for its antimicrobial properties.

2. Use:

Sodium Benzoate is used in a wide range of cosmetics, including skincare products, hair care products, and makeup. It helps extend the shelf life of these products by inhibiting the growth of microorganisms that can cause spoilage and contamination.

3. Usage Sodium Benzoate:

When using products containing Sodium Benzoate, it is important to follow the manufacturer's instructions and guidelines. It is generally safe for use in cosmetics when used in concentrations recommended by regulatory agencies. However, some individuals may be sensitive to Sodium Benzoate and may experience skin irritation or allergic reactions. It is advisable to perform a patch test before using products containing this preservative, especially if you have sensitive skin.

4. References:

- "Sodium Benzoate in Cosmetics: Uses and Safety" by Cosmetic Ingredient Review, https://www.cir-safety.org/ingredients/sodium-benzoate

- "Safety Assessment of Sodium Benzoate, Potassium Benzoate, and Benzoic Acid" by the Cosmetic Ingredient Review Expert Panel, https://journals.sagepub.com/doi/abs/10.1177/1091581815591024

- "Preservatives in Cosmetics" by the U.S. Food and Drug Administration, https://www.fda.gov/cosmetics/cosmetic-ingredients/preservatives-cosmetics

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 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 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/.