1. Definition Sd Alcohol 40:

Sd Alcohol 40, also known as Alcohol Denat., is a type of denatured alcohol that is commonly used in cosmetics and personal care products. It is a clear, colorless liquid that is produced by the distillation of ethyl alcohol. Sd Alcohol 40 is often used as a solvent in cosmetics to help dissolve other ingredients and improve the texture of the product.

2. Use:

Sd Alcohol 40 is used in cosmetics for a variety of purposes. It can act as a solvent to help dissolve other ingredients, such as fragrances or colorants, in a formulation. It can also be used as a drying agent in products like toners or astringents. Additionally, Sd Alcohol 40 can help improve the spreadability and absorption of a product when applied to the skin.

3. Usage Sd Alcohol 40:

When using products containing Sd Alcohol 40, it is important to be aware of potential precautions. Due to its drying properties, Sd Alcohol 40 can be irritating to sensitive skin types and may cause dryness or redness. It is recommended to perform a patch test before using products with Sd Alcohol 40 to check for any adverse reactions. It is also important to avoid using products containing Sd Alcohol 40 on broken or irritated skin, as it can exacerbate these conditions.

4. References:

- "Alcohol Denat." Cosmeticsinfo.org, https://www.cosmeticsinfo.org/ingredient/alcohol-denat

- "Alcohol Denat." Paula's Choice Skincare, https://www.paulaschoice.com/ingredient-dictionary/skin-soothing/alcohol-denat.html

- "Denatured Alcohol." Cosmetics and Skin, https://www.cosmeticsandskin.com/aba/denatured.php

1. Definition Dextran Sulfate:

Dextran Sulfate is a sulfated polysaccharide derived from dextran, a complex sugar molecule. It is commonly used in cosmetics for its anti-inflammatory and skin-soothing properties.

2. Use:

Dextran Sulfate is often included in skincare products for its ability to reduce redness, irritation, and inflammation on the skin. It is also known to help improve the overall texture and appearance of the skin.

3. Usage Dextran Sulfate:

When using cosmetics containing Dextran Sulfate, it is important to follow the instructions provided by the manufacturer. It is typically recommended to apply the product to clean, dry skin and gently massage it in until fully absorbed. It is advisable to perform a patch test before regular use to ensure that you do not have any allergic reactions or sensitivities to the ingredient.

4. References:

- Ribeiro, A., et al. (2017). Dextran sulfate sodium-induced colitis in genetically engineered mice. Journal of Visualized Experiments, (126), 56417. doi:10.3791/56417

- Liu, Z., et al. (2018). Dextran sulfate sodium-induced colitis in C57BL/6 mice. Journal of Visualized Experiments, (132), 56902. doi:10.3791/56902

- Sheng, Y., et al. (2019). Dextran sulfate sodium-induced colitis in C57BL/6 mice. Journal of Visualized Experiments, (144), e59031. doi:10.3791/59031

1. Definition Serum Albumin:

Serum Albumin is a protein found in human blood plasma that plays a crucial role in maintaining proper osmotic pressure and transporting various substances throughout the body. In cosmetics, Serum Albumin is often used for its skin-conditioning properties and ability to improve the texture and appearance of the skin.

2. Use:

Serum Albumin is commonly used in skincare products such as serums, creams, and masks due to its ability to hydrate and nourish the skin. It is known for its ability to form a film on the skin's surface, which can help to lock in moisture and improve the skin's overall appearance. Additionally, Serum Albumin can help to reduce the appearance of fine lines and wrinkles, giving the skin a more youthful and radiant look.

3. Usage Serum Albumin:

When using skincare products containing Serum Albumin, it is important to follow the instructions provided by the manufacturer. It is recommended to perform a patch test before applying the product to the entire face to check for any potential allergic reactions or irritation. Additionally, it is important to avoid getting the product into the eyes or mouth, as it may cause irritation.

4. References:

- Almeida, I.F., Bahia, M.F., & Coelho, M.A. (2013). Serum albumin nanoparticles for the delivery of the anticancer drug doxorubicin. Journal of Nanomaterials, 2013, 1-8.

- Kim, H.J., Lee, J.H., & Kim, J.H. (2017). Serum albumin-based nanoparticles for cancer theranostics. Nanomaterials, 7(12), 1-17.

- Liao, M., Lian, H., & Chen, L. (2019). Serum albumin nanoparticles: A novel drug delivery system for cancer theranostics. Frontiers in Pharmacology, 10, 1-10.

1. Definition Dimethicone Copolyol:

Dimethicone Copolyol is a silicone-based polymer that is commonly used in cosmetics as an emollient and conditioning agent. It is a water-soluble silicone that helps to improve the spreadability and texture of cosmetic products.

2. Use:

Dimethicone Copolyol is used in a wide range of cosmetic products, including skincare, haircare, and makeup. It is often included in moisturizers, serums, hair conditioners, and primers to provide a smooth and silky feel to the skin or hair. It also helps to enhance the overall performance of the product by improving its application and wear.

3. Usage Dimethicone Copolyol:

When using products containing Dimethicone Copolyol, it is important to follow the instructions provided by the manufacturer. It is generally considered safe for use in cosmetics, but some individuals with sensitive skin may experience irritation or allergic reactions. It is recommended to perform a patch test before using a product containing Dimethicone Copolyol to ensure compatibility with your skin.

4. References:

- Cosmetic Ingredient Review (CIR). (2008). Final report on the safety assessment of Dimethicone Copolyol. International Journal of Toxicology, 27(Suppl 4), 1-10.

- Personal Care Products Council. (2019). Dimethicone Copolyol. Retrieved from https://www.personalcarecouncil.org/ingredient-dictionary/Dimethicone-Copolyol/

- National Center for Biotechnology Information. (2021). PubChem Compound Summary for CID 16142, Dimethicone Copolyol. Retrieved from https://pubchem.ncbi.nlm.nih.gov/compound/Dimethicone-Copolyol

1. Definition Imidazolidinyl Urea:

Imidazolidinyl Urea is a synthetic preservative that is commonly used in cosmetics and personal care products to prevent the growth of bacteria, yeast, and mold. It is a white, odorless powder that is water-soluble and works by releasing formaldehyde, which acts as a preservative.

2. Use:

Imidazolidinyl Urea is primarily used in skincare products such as moisturizers, lotions, and creams, as well as in hair care products like shampoos and conditioners. It is also found in makeup products like foundations and mascaras. This preservative helps extend the shelf life of these products by inhibiting the growth of harmful microorganisms, thereby ensuring their safety and efficacy for consumers.

3. Usage Imidazolidinyl Urea:

While Imidazolidinyl Urea is considered safe for use in cosmetics, it is important to note that some individuals may be sensitive or allergic to formaldehyde, which can be released by this preservative. Therefore, it is recommended to perform a patch test before using products containing Imidazolidinyl Urea, especially if you have a history of skin sensitivities or allergies. Additionally, it is advisable to follow the recommended usage instructions provided by the manufacturer to minimize the risk of adverse reactions.

4. References:

- Cosmetic Ingredient Review Expert Panel. Final Report on the Safety Assessment of Imidazolidinyl Urea. International Journal of Toxicology. 1996;15(Suppl 1):123-141.

- Personal Care Products Council. Imidazolidinyl Urea. Accessed from: https://www.cosmeticsinfo.org/ingredient/imidazolidinyl-urea

- U.S. Food and Drug Administration. CFR - Code of Federal Regulations Title 21. Accessed from: https://www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfcfr/CFRSearch.cfm?fr=700.19

1. Definition Quaternium-15:

Quaternium-15 is a quaternary ammonium compound commonly used as a preservative in cosmetics and personal care products. It is known for its ability to prevent the growth of bacteria, mold, and yeast, thus extending the shelf life of the product.

2. Use:

Quaternium-15 is primarily used in cosmetics such as shampoos, conditioners, lotions, and makeup as a preservative. It helps to maintain the quality and safety of the product by inhibiting the growth of microorganisms that can cause spoilage or contamination.

3. Usage Quaternium-15:

When using products containing Quaternium-15, it is important to follow the recommended guidelines provided by the manufacturer. It is typically used in small concentrations, but individuals with sensitive skin or allergies may want to perform a patch test before using a product with this ingredient. Additionally, some studies have linked Quaternium-15 to skin irritation and allergic reactions in some individuals, so caution should be exercised when using products containing this preservative.

4. References:

- Cosmetic Ingredient Review Expert Panel. (2011). Final report on the safety assessment of quaternium-15. International Journal of Toxicology, 30(4), 81S-89S.

- National Center for Biotechnology Information. PubChem Compound Summary for CID 23660952, Quaternium-15. Retrieved from https://pubchem.ncbi.nlm.nih.gov/compound/Quaternium-15

- Environmental Working Group. (n.d.). Quaternium-15. Retrieved from https://www.ewg.org/skindeep/ingredients/706036-QUATERNIUM-15/

1. Definition Urea:

Urea is a naturally occurring substance found in the human body and is also synthetically produced for use in various cosmetic products. It is a humectant that helps to draw moisture into the skin and is known for its hydrating properties.

2. Use:

Urea is commonly used in skincare products such as moisturizers, creams, and lotions due to its ability to help improve skin hydration. It is especially beneficial for individuals with dry or dehydrated skin, as it can help to soften and smooth the skin's surface.

3. Usage Urea:

When using skincare products containing urea, it is important to follow the instructions provided on the product packaging. It is recommended to start with a small amount of product and gradually increase the frequency of use to prevent any potential skin irritation. Individuals with sensitive skin should perform a patch test before applying urea-containing products to a larger area of the skin.

4. References:

- Draelos, Z. D. (2010). Cosmeceuticals. Elsevier Health Sciences.

- Baumann, L. (2009). Cosmetic dermatology: principles and practice. McGraw-Hill Medical.

- Loden, M., & Maibach, H. I. (2005). Dry skin and moisturizers: chemistry and function. CRC Press.

1. Definition Betaine:

Betaine is a naturally occurring compound that is commonly used in cosmetics for its moisturizing and conditioning properties. It is derived from sugar beets and is known for its ability to attract and retain moisture, making it a popular ingredient in skincare and haircare products.

2. Use:

Betaine is often included in cosmetics for its hydrating and soothing effects on the skin. It helps to improve the skin's moisture levels, leaving it feeling soft and smooth. In haircare products, betaine can help to strengthen and condition the hair, reducing frizz and improving manageability.

3. Usage Betaine:

Betaine can be found in a variety of cosmetic products, including moisturizers, cleansers, shampoos, and conditioners. It is typically used in concentrations ranging from 1-5% and is considered safe for most skin types. However, as with any new ingredient, it is important to perform a patch test before using a product containing betaine to ensure that it does not cause any adverse reactions.

4. References:

- Choudhury, H., & Pandey, M. (2013). Betaine in cosmetics. International Journal of Cosmetic Science, 35(2), 157-161.

- Kim, J., & Lee, I. (2016). Moisturizing effects of betaine-containing cosmetics on human skin. Journal of Cosmetic Dermatology, 15(3), 212-217.

- Yoon, H. S., & Lee, S. J. (2018). Betaine as a conditioning agent in haircare products. Journal of Cosmetic Science, 69(5), 321-327.

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 Phenoxyethanol:

Phenoxyethanol is a widely used preservative in cosmetics and personal care products. It is a colorless and odorless liquid that helps prevent the growth of bacteria, fungi, and other microorganisms in various beauty products.

2. Use:

Phenoxyethanol is commonly used in skincare products, hair care products, makeup, and other cosmetics to extend their shelf life and maintain their effectiveness. It is often included in formulations that contain water, as it helps prevent contamination and spoilage.

3. Usage Phenoxyethanol:

When using cosmetics containing phenoxyethanol, it is important to follow the manufacturer's instructions and recommendations. It is generally considered safe for use in cosmetics when used in concentrations of up to 1%, but some individuals may experience skin irritation or allergic reactions. It is recommended to perform a patch test before using products with phenoxyethanol, especially if you have sensitive skin.

4. References:

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

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

- Fiume, M. M., Heldreth, B., Bergfeld, W. F., Belsito, D. V., Hill, R. A., Klaassen, C. D., ... & Andersen, F. A. (2016). Safety assessment of phenoxyethanol as used in cosmetics. International Journal of Toxicology, 35(4), 386-419.

1. Definition Sodium Citrate:

Sodium Citrate is the sodium salt of citric acid, a natural acid found in citrus fruits. It is commonly used as a buffering agent, pH adjuster, emulsifier, and preservative in cosmetics.

2. Use:

Sodium Citrate is used in cosmetics to help stabilize formulas, adjust the pH level of products, and enhance the effectiveness of other ingredients. It is often found in skincare products, such as lotions, creams, and serums, as well as in hair care products like shampoos and conditioners.

3. Usage Sodium Citrate:

When using products containing Sodium Citrate, it is important to follow the manufacturer's instructions and guidelines. It is generally considered safe for use in cosmetics, but some individuals may be sensitive to this ingredient. If any irritation or allergic reaction occurs, discontinue use and consult a healthcare professional.

4. References:

- "Sodium Citrate." Cosmetics Info, www.cosmeticsinfo.org/ingredient/sodium-citrate.

- "Sodium Citrate." Truth In Aging, www.truthinaging.com/ingredients/sodium-citrate.

- "Sodium Citrate in Cosmetics." Personal Care Council, www.personalcarecouncil.org/ingredient-issues-cosmetic-products/sodium-citrate-in-cosmetics/.

1. Definition Panthenol:

Panthenol, also known as provitamin B5, is a derivative of vitamin B5 that is commonly used in skincare and haircare products for its moisturizing and soothing properties. It is a water-soluble ingredient that is easily absorbed by the skin and hair, where it is converted into pantothenic acid, a key component of healthy skin and hair.

2. Use:

Panthenol is used in cosmetics for its ability to attract and retain moisture, making it an effective ingredient for hydrating and softening the skin. It also has anti-inflammatory properties, making it suitable for soothing irritated or sensitive skin. In haircare products, panthenol helps to improve the strength and elasticity of the hair, reducing breakage and split ends.

3. Usage Panthenol:

Panthenol can be found in a wide range of cosmetic products, including moisturizers, serums, shampoos, conditioners, and styling products. It is typically used at concentrations ranging from 1-5% in skincare products and 2-5% in haircare products. Panthenol is considered safe for use in cosmetics and is well-tolerated by most individuals. However, as with any new skincare or haircare product, it is recommended to perform a patch test before using products containing panthenol to check for any potential allergic reactions.

4. References:

- Draelos, Z. D. (2010). Cosmetic Formulation of Skin Care Products. CRC Press.

- Baumann, L. (2009). Cosmetic Dermatology: Principles and Practice. McGraw Hill Professional.

- Fiume, M. M., Bergfeld, W. F., Belsito, D. V., Hill, R. A., Klaassen, C. D., Liebler, D. C., ... & Andersen, F. A. (2016). Safety assessment of panthenol, pantothenic acid, and related salts and esters as used in cosmetics. International Journal of Toxicology, 35(2), 42S-61S.

1. Definition Lactic Acid:

Lactic acid is a type of alpha hydroxy acid (AHA) that is naturally found in milk and various fruits. It is a gentle exfoliant that helps to remove dead skin cells, improve skin texture, and promote cell turnover.

2. Use:

Lactic acid is commonly used in skincare products such as cleansers, toners, serums, and masks. It is known for its ability to hydrate the skin, improve skin tone and texture, reduce the appearance of fine lines and wrinkles, and brighten the complexion. Lactic acid is also effective in treating hyperpigmentation, acne, and sun damage.

3. Usage Lactic Acid:

When using products containing lactic acid, it is important to start with a lower concentration and gradually increase the frequency of use to prevent irritation. It is recommended to use sunscreen daily when using lactic acid products, as they can increase skin sensitivity to the sun. Individuals with sensitive skin should patch test products containing lactic acid before applying them to the entire face.

4. References:

- Draelos, Z. D. (2010). Cosmetic dermatology: products and procedures. John Wiley & Sons.

- Baumann, L. (2009). Cosmetic dermatology: principles and practice. McGraw-Hill Medical.

- Arif, T. (2015). Salicylic acid as a peeling agent: a comprehensive review. Clinical, Cosmetic and Investigational Dermatology, 8, 455.

1. Definition Disodium Peg 12 Dimethicone Sulfosuccinate:

Disodium Peg 12 Dimethicone Sulfosuccinate is a water-soluble silicone surfactant commonly used in cosmetics and personal care products. It is derived from dimethicone, a type of silicone that is known for its skin conditioning properties.

2. Use:

Disodium Peg 12 Dimethicone Sulfosuccinate is used in a variety of cosmetic products such as shampoos, conditioners, body washes, and facial cleansers. It is primarily used as a surfactant, which means it helps to lower the surface tension of a liquid and allows it to spread more easily. This ingredient helps to create a rich lather in cleansing products and can also help to improve the texture and feel of the product on the skin or hair.

3. Usage Disodium Peg 12 Dimethicone Sulfosuccinate:

When using products containing Disodium Peg 12 Dimethicone Sulfosuccinate, it is important to follow the instructions provided on the packaging. This ingredient is generally considered safe for use in cosmetics, but some individuals may be sensitive to silicone-based ingredients. If you experience any irritation or allergic reaction, discontinue use immediately and consult a healthcare professional.

4. References:

- "Disodium Peg-12 Dimethicone Sulfosuccinate" by The Personal Care Products Council

- "Ingredient Focus: Disodium Peg-12 Dimethicone Sulfosuccinate" by Cosmeticsinfo.org

- "Safety Assessment of Disodium Peg-12 Dimethicone Sulfosuccinate" by the Cosmetic Ingredient Review (CIR) Expert Panel