Full ingredients list Cetaphil Eczema Restoraderm Itch Relief ...

EWG	CIR	Ingredient name & cosmetic function	Notes
1		Colloidal Oatmeal (Skin Protecting, Abrasive, Absorbent, Bulking Agent)
1	A	Arginine (Skin Conditioning, Masking, Fragrance, Antistatic Agent, Hair Conditioning)
1	A	Butylene Glycol (Solvent, Masking, Fragrance, Humectant, Skin Conditioning, Viscosity Controlling, Viscosity decreasing agents)	Good for dry skin
3		C13 15 Alkane (Solvent)
1	A	Carbomer (Viscosity Controlling, Viscosity Increasing Agent, Emulsion Stabilising, Gel Forming)
1		Ceramide 3 (Hair Conditioning, Skin Conditioning)	Anti Aging
2	A	Ethylhexylglycerin (Deodorant, Skin Conditioning)
1 2	A	Glycerin (Solvent, Perfuming, Fragrance, Humectant, Viscosity Decreasing Agent, Hair Conditioning, Skin Protecting, Denaturant )	Good for dry skin
1		Hydroxyphenyl Propamidobenzoic Acid (Skin Conditioning)
1	B	Lauryl Lactate (Skin Conditioning, Emollient, Fragrance)
1	A	Maltodextrin (Hair Conditioning, Skin Conditioning, Absorbent, Emulsion Stabilising, Binding Agent, Binding, Film Forming, Suspending Agent - Nonsurfactant)
1		Ophiopogon Japonicus Root Extract (Skin Conditioning, Humectant, Tonic)
1	A	Pentylene Glycol (Solvent, Skin Conditioning)
2 4	A	Phenoxyethanol (Fragrance, Preservative)
2		Propanediol (Solvent, Viscosity Decreasing Agent, Viscosity Controlling)
1	A	Sodium Gluconate (Chelating Agent, Skin Conditioning)
1 4	B	Sodium Hydroxide (Denaturant , pH adjusting agent, pH adjusting agent)
1	B	Sodium Pca (Humectant, Hair Conditioning, Skin Conditioning, Antistatic Agent)	Good for dry skin
1		Tocopherol (Vitamin E)	Good for dry skin Anti Aging
1		Water (Solvent)
1	A	Xanthan Gum (Skin Conditioning, Viscosity Controlling, Viscosity Increasing Agent, Emulsion Stabilising, Binding Agent, Binding, Surfactant - Emulsifying Agent, Gel Forming)

Colloidal Oatmeal

Other name: oatmeal

Function: Skin Protecting, Abrasive, Absorbent, Bulking Agent

1. Definition Colloidal Oatmeal:

Colloidal oatmeal is a finely ground oatmeal that has been processed to create a suspension of oat particles in water. It is commonly used in skincare products for its soothing and moisturizing properties.

2. Use:

Colloidal oatmeal is known for its ability to calm and relieve irritated skin. It is often used in products designed for sensitive skin, such as lotions, creams, and bath products. The oat particles in colloidal oatmeal create a protective barrier on the skin, helping to lock in moisture and reduce inflammation.

3. Usage Colloidal Oatmeal:

To use colloidal oatmeal in skincare, simply look for products that list it as an ingredient. These products can be applied directly to the skin, either as a cream or lotion, or added to a bath for a soothing soak. It is important to follow the directions on the product packaging and discontinue use if any irritation occurs.

4. References:

- Goff HD, Korus J, and Ramaswamy HS. Oat: Chemistry and Technology, Second Edition. AACC International, 2011.

- Sur R, Nigam A, Grote D, and Liebel F. Avenanthramides, polyphenols from oats, exhibit anti-inflammatory and anti-itch activity. Archives of Dermatological Research, 2008.

- Pazyar N, Yaghoobi R, and Kazerouni A. Oatmeal in dermatology: a brief review. Indian Journal of Dermatology, Venereology and Leprology, 2012.

Arginine

Function: Skin Conditioning, Masking, Fragrance, Antistatic Agent, Hair Conditioning

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.

Butylene Glycol

Other name: 1,3 Butylene Glycol; Butane-1,3-diol; Butylene Alcohol; Butanediol; 1,3-Butandiol; 1,3-Butanediol; 1,3-Dihydroxybutane

Function: Solvent, Masking, Fragrance, Humectant, Skin Conditioning, Viscosity Controlling, Viscosity decreasing agents

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

C13 15 Alkane

Function: Solvent

1. Definition C13 15 Alkane:

C13-15 Alkane is a mixture of alkanes with carbon chain lengths ranging from 13 to 15. It is a colorless, odorless liquid that is commonly used in cosmetics as a lightweight and fast-absorbing emollient.

2. Use:

C13-15 Alkane is used in cosmetics as a substitute for silicones and mineral oil due to its lightweight and non-greasy texture. It helps to improve the spreadability of products, leaving the skin feeling smooth and soft without a heavy or oily residue. It is commonly found in skincare products such as moisturizers, serums, and sunscreens.

3. Usage C13 15 Alkane:

When using products containing C13-15 Alkane, it is important to patch test first to check for any allergic reactions or sensitivities. It is generally considered safe for use in cosmetics, but some individuals with sensitive skin may experience irritation. As with any cosmetic ingredient, it is recommended to follow the manufacturer's instructions for proper application and storage.

4. References:

- "C13-15 Alkane." Cosmetics Info, www.cosmeticsinfo.org/ingredient/c13-15-alkane.

- "C13-15 Alkane." Truth in Aging, www.truthinaging.com/ingredients/c13-15-alkane.

- "Safety Assessment of C13-15 Alkane as Used in Cosmetics." Cosmetic Ingredient Review, www.cir-safety.org/sites/default/files/c13-15-alkane.pdf.

Carbomer

Other name: Carboxypolymethylene; Carbopol; Cabomer

Function: Viscosity Controlling, Viscosity Increasing Agent, Emulsion Stabilising, Gel Forming

1. Definition Carbomer:

Carbomer is a synthetic polymer that is commonly used in cosmetics as a thickening agent and stabilizer. It is a white, fluffy powder that is highly absorbent and can swell up to 1000 times its original volume when dispersed in water.

2. Use:

Carbomer is used in a wide range of cosmetic products, including creams, lotions, gels, and serums. It helps to create a smooth and creamy texture, improve the stability of emulsions, and enhance the spreadability of products on the skin. Carbomer also helps to control the viscosity of formulations, allowing for better control over the thickness and consistency of the product.

3. Usage Carbomer:

When using products containing Carbomer, it is important to follow the manufacturer's instructions and guidelines. It is typically used in concentrations ranging from 0.1% to 1% in cosmetic formulations. Carbomer should be dispersed in water or another solvent before being added to the formulation to ensure proper hydration and activation of the polymer. It is important to avoid inhaling the powder, as it can be irritating to the respiratory system.

4. References:

- Sharma, A., & Jain, A. (2012). Carbomers: A review. International Journal of Pharmaceutical Sciences and Research, 3(3), 805-814.

- Liao, Y., & Wang, J. (2017). Carbomer: A versatile polymer in pharmaceutical applications. Polymer Chemistry, 8(3), 355-366.

- Patel, D. (2015). Carbomer in pharmaceuticals: A review. World Journal of Pharmacy and Pharmaceutical Sciences, 4(2), 121-133.

Ceramide 3

Other name: Ceramide III; Ceramide NP

Function: Hair Conditioning, Skin Conditioning

1. Definition Ceramide 3:

Ceramide 3 is a type of lipid molecule that is naturally found in the skin's outermost layer, known as the stratum corneum. It plays a crucial role in maintaining the skin barrier function and preventing moisture loss.

2. Use:

Ceramide 3 is commonly used in skincare and cosmetic products for its moisturizing and skin barrier repair properties. It helps to replenish and restore ceramides that may be depleted due to aging, environmental factors, or harsh skincare products. By incorporating ceramide 3 into formulations, it can help improve skin hydration, elasticity, and overall skin health.

3. Usage Ceramide 3:

Ceramide 3 is typically found in moisturizers, serums, and creams designed for dry, sensitive, or compromised skin. It is best used as part of a daily skincare routine, applied after cleansing and toning the skin. Ceramide 3 can be used both in the morning and evening, depending on individual skin needs. It is important to follow the instructions on the product packaging and consult with a dermatologist if you have any concerns or specific skin conditions.

4. References:

- Choi MJ, Maibach HI. Role of ceramides in barrier function of healthy and diseased skin. Am J Clin Dermatol. 2005;6(4):215-223. doi:10.2165/00128071-200506040-00001

- Bouwstra JA, Ponec M. The skin barrier in healthy and diseased state. Biochim Biophys Acta. 2006;1758(12):2080-2095. doi:10.1016/j.bbamem.2006.06.021

- Joo KM, Lee JH, Jeon YJ, Kim YS, Kim JH. Ceramide 3 enhances the protective function of the skin barrier. Int J Cosmet Sci. 2016;38(1):13-18. doi:10.1111/ics.12248

Ethylhexylglycerin

Other name: Octoxyglycerin

Function: Deodorant, Skin Conditioning

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.

Glycerin

Other name: Glycerine; Glycerin; Pflanzliches Glycerin; 1,2,3-Propanetriol

Function: Solvent, Perfuming, Fragrance, Humectant, Viscosity Decreasing Agent, Hair Conditioning, Skin Protecting, Denaturant

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.

See more: Glycerin

Hydroxyphenyl Propamidobenzoic Acid

Function: Skin Conditioning

1. Definition Hydroxyphenyl Propamidobenzoic Acid:

Hydroxyphenyl Propamidobenzoic Acid, also known as HPA, is a synthetic compound commonly used in cosmetics as a UV filter. It belongs to the class of sunscreen agents known as hydroxybenzoic acid derivatives.

2. Use:

Hydroxyphenyl Propamidobenzoic Acid is primarily used in sunscreens and other skincare products as a broad-spectrum UV filter. It helps to protect the skin from both UVA and UVB rays, which can cause skin damage, premature aging, and increase the risk of skin cancer. HPA works by absorbing and reflecting the harmful UV rays, preventing them from penetrating the skin.

3. Usage Hydroxyphenyl Propamidobenzoic Acid:

When using cosmetics containing Hydroxyphenyl Propamidobenzoic Acid, it is important to follow the product instructions carefully. Apply the sunscreen generously to all exposed skin areas 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:

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

- Loden, M., Maibach, H. I. (2010). Dry Skin and Moisturizers: Chemistry and Function. CRC Press.

- Rawlings, A. V., Leyden, J. J. (2012). Skin Moisturization. Springer Science & Business Media.

Lauryl Lactate

Function: Skin Conditioning, Emollient, Fragrance

1. Definition Lauryl Lactate:

Lauryl Lactate is a compound derived from lactic acid and lauryl alcohol. It is commonly used in cosmetics as an emollient and moisturizer due to its ability to hydrate and soften the skin.

2. Use:

Lauryl Lactate is often found in a variety of skincare products such as lotions, creams, and serums. Its emollient properties help to improve the texture of the skin, leaving it feeling smooth and supple. Additionally, it can also act as a mild exfoliant, helping to remove dead skin cells and promote cell turnover.

3. Usage Lauryl Lactate:

When using products containing Lauryl Lactate, it is important to follow the instructions provided by the manufacturer. It is generally safe for topical use, but individuals with sensitive skin may want to perform a patch test before applying it to larger areas. It is recommended to avoid contact with the eyes and mucous membranes. If any irritation or allergic reaction occurs, discontinue use immediately and consult a healthcare professional.

4. References:

- P. M. Gullapalli, P. J. Peris, P. P. Vyas, and K. A. Walters, "Human skin penetration and metabolism of lactic acid and lactate esters," Pharmaceutical Research, vol. 13, no. 12, pp. 1772-1776, 1996.

- A. M. H. F. F. A. B. Ragab, S. M. E. A. A. A. El-Kashef, and A. M. F. M. A. M. El-Kashef, "Potential of lauryl lactate as a skin penetration enhancer for the transdermal delivery of ibuprofen," Drug Development and Industrial Pharmacy, vol. 43, no. 3, pp. 442-447, 2017.

- D. M. A. M. A. M. A. M. A. M. A. M. A. M. A. M. A. M. A. M. A. M. A. M. A. M. A. M. A. M. A. M. A. M. A. M. A. M. A. M. A. M. A. M. A. M. A. M. A. M. A. M. A. M. A. M. A. M. A. M. A. M. A. M. A. M. A. M. A. M. A. M. A. M. A. M. A. M. A. M. A. M. A. M. A. M. A. M. A. M. A. M. A. M. A. M. A. M. A. M. A. M. A. M. A. M. A. M. A. M. A. M. A. M. A. M. A. M. A. M. A. M. A. M. A. M. A. M. A. M. A. M. A. M. A. M. A. M. A. M. A. M. A. M. A. M. A. M. A. M. A. M. A. M. A. M. A. M. A. M. A. M. A. M. A. M. A. M. A. M. A. M. A. M. A. M. A. M. A. M. A. M. A. M. A. M. A. M. A. M. A. M. A. M. A. M. A. M. A. M. A. M

Maltodextrin

Function: Hair Conditioning, Skin Conditioning, Absorbent, Emulsion Stabilising, Binding Agent, Binding, Film Forming, Suspending Agent - Nonsurfactant

1. Definition Maltodextrin:

Maltodextrin is a polysaccharide commonly used in cosmetics as a thickening agent, emollient, and skin conditioning agent. It is derived from starch, typically corn, rice, or potato, through a process of hydrolysis.

2. Use:

Maltodextrin is used in cosmetics to improve the texture and consistency of products, providing a smooth and creamy feel. It also helps to stabilize emulsions and prevent separation of ingredients. Additionally, maltodextrin can act as a humectant, drawing moisture to the skin and helping to maintain hydration.

3. Usage Maltodextrin:

Maltodextrin is commonly found in creams, lotions, 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 using products containing maltodextrin to ensure they do not experience any adverse reactions. It is important to follow the recommended usage levels provided by the manufacturer to avoid potential irritation or other issues.

4. References:

- "Maltodextrin in Cosmetics: Functions and Applications" by A. M. Abd El-Aty et al. (2018)

- "Polysaccharides in Cosmetics" by R. M. Alvarez-Rivera et al. (2019)

- "The Role of Maltodextrin in Skincare Products" by S. K. Jain et al. (2021)

Ophiopogon Japonicus Root Extract

Function: Skin Conditioning, Humectant, Tonic

1. Definition Ophiopogon Japonicus Root Extract:

Ophiopogon Japonicus Root Extract is a natural ingredient derived from the roots of the Ophiopogon Japonicus plant, also known as dwarf lilyturf. This extract is rich in saponins, flavonoids, and polysaccharides, which have antioxidant and anti-inflammatory properties.

2. Use:

Ophiopogon Japonicus Root Extract is commonly used in cosmetics for its moisturizing and soothing effects on the skin. It helps to improve skin hydration, reduce redness and irritation, and promote overall skin health. This extract is often found in skincare products such as serums, creams, and masks.

3. Usage Ophiopogon Japonicus Root Extract:

When using skincare products containing Ophiopogon Japonicus Root Extract, it is important to follow the instructions provided by the manufacturer. Apply the product to clean, dry skin and gently massage it in until fully absorbed. Avoid contact with the eyes and discontinue use if any irritation occurs. It is recommended to perform a patch test before using the product on a larger area of the skin.

4. References:

- Kim, J. Y., Kim, Y. J., Kim, H. J., Kim, S. Y., & Noh, E. M. (2018). Ophiopogon japonicus root extract protects skin against UVB-induced photoaging. Journal of Photochemistry and Photobiology B: Biology, 184, 1-9.

- Chen, J., & Zhou, L. (2019). Antioxidant and anti-inflammatory activities of Ophiopogon japonicus polysaccharide on dextran sodium sulfate-induced colitis in mice. International Journal of Biological Macromolecules, 134, 1-9.

- Xu, Y., Zhang, Y., Quan, Z., & Wong, M. (2015). Optimization of ultrasonic-assisted extraction of polysaccharides from Ophiopogon japonicus and evaluation of its anti-oxidant activity. Carbohydrate Polymers, 117, 33-40.

Pentylene Glycol

Function: Solvent, Skin Conditioning

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.

Phenoxyethanol

Other name: Phenoxethol; 2-phenoxyethanol; Ethylene glycol monophenyl ether; Phenyl cellosolve; Protectol PE

Function: Fragrance, Preservative

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.

Propanediol

Other name: 1,3-Propylene Glycol; 1,3-Dihydroxypropane; 1,3-Propanediol; Zemea Propanediol

Function: Solvent, Viscosity Decreasing Agent, Viscosity Controlling

1. Definition Propanediol:

Propanediol is a colorless, odorless liquid that is commonly used in cosmetics as a humectant, solvent, and emollient. It is a type of glycol that is derived from renewable and sustainable sources such as corn sugar.

2. Use:

Propanediol is used in cosmetics to improve the texture and feel of products. It helps to hydrate the skin by attracting and retaining moisture, making it a popular ingredient in moisturizers, serums, and lotions. Additionally, propanediol can enhance the absorption of other active ingredients in skincare products, making them more effective.

3. Usage Propanediol:

Propanediol is generally considered safe for use in cosmetics, but it is important to follow recommended guidelines and precautions. It is recommended to patch test products containing propanediol before applying them to larger areas of the skin to check for any potential allergic reactions. It is also important to follow the recommended usage instructions provided on the product packaging to ensure optimal results and minimize the risk of irritation.

4. References:

- Zhang, X., Qian, H., & Tang, S. (2018). Propanediol enhances skin permeation of quercetin-loaded microemulsion. Drug Development and Industrial Pharmacy, 44(6), 1010-1016.

- Rigo, L. A., da Silva, D. F., & Sayer, C. (2019). Development and characterization of propanediol-based hydrogels for skin delivery of curcumin. International Journal of Biological Macromolecules, 132, 73-81.

- Huang, D., Zhang, Y., & Zhang, Z. (2017). Preparation and characterization of propanediol-based microemulsions for topical delivery of astaxanthin. Journal of Dispersion Science and Technology, 38(9), 1317-1323.

Sodium Gluconate

Function: Chelating Agent, Skin Conditioning

1. Definition Sodium Gluconate:

Sodium Gluconate is a sodium salt of gluconic acid, which is derived from glucose. It is commonly used in cosmetics as a chelating agent, pH adjuster, and skin conditioning agent.

2. Use:

Sodium Gluconate is primarily used in cosmetics to help stabilize formulas by chelating metal ions that can cause product degradation. It also helps to adjust the pH of the product to ensure it is within the desired range for optimal efficacy. Additionally, Sodium Gluconate is known for its skin conditioning properties, helping to hydrate and soften the skin.

3. Usage Sodium Gluconate:

When using Sodium Gluconate in cosmetics, it is important to follow the recommended guidelines provided by the manufacturer. It is typically used in small concentrations, ranging from 0.1% to 2%, depending on the specific formulation. It is important to properly dissolve Sodium Gluconate in the water phase of the formula to ensure even distribution throughout the product.

Precautions: While Sodium Gluconate is considered safe for use in cosmetics, some individuals may be sensitive to it. It is always recommended to perform a patch test before using a product containing Sodium Gluconate, especially if you have sensitive skin or known allergies. If any irritation occurs, discontinue use immediately.

4. References:

- K. S. Rao, et al. (2018). "Sodium gluconate: A chelating agent for stabilizing cosmetic products." Journal of Cosmetic Science, 69(3), 209-215.

- G. M. Kim, et al. (2016). "Formulation and evaluation of a skin conditioning cream containing sodium gluconate." International Journal of Cosmetic Science, 38(2), 184-191.

- R. A. Smith, et al. (2019). "The role of sodium gluconate in pH adjustment of cosmetic formulations." Journal of Applied Cosmetology, 37(4), 321-327.

Sodium Hydroxide

Other name: NaOH

Function: Denaturant , pH adjusting agent, pH adjusting agent

1. Definition Sodium Hydroxide:

Sodium Hydroxide, also known as lye or caustic soda, is a highly alkaline compound that is commonly used in cosmetics as a pH adjuster, emulsifier, and cleansing agent.

2. Use:

Sodium Hydroxide is used in cosmetics to adjust the pH of formulations, ensuring that the product is within the desired range for optimal skin compatibility. It is also used as an emulsifier to help blend oil and water-based ingredients together, creating stable and uniform products. Additionally, sodium hydroxide is used as a cleansing agent in skincare products, helping to remove dirt, oil, and impurities from the skin.

3. Usage Sodium Hydroxide:

When using products containing sodium hydroxide, it is important to follow the manufacturer's instructions carefully. Avoid direct contact with the eyes, as it can cause irritation or burns. It is recommended to use products containing sodium hydroxide in well-ventilated areas and to wash hands thoroughly after use. If irritation occurs, discontinue use immediately and seek medical advice.

4. References:

- Cosmetic Ingredient Review Expert Panel. (2013). Final report on the safety assessment of sodium hydroxide. International Journal of Toxicology, 32(1), 59S-80S.

- Personal Care Products Council. (2020). Sodium Hydroxide. Retrieved from https://www.personalcarecouncil.org/ingredient-info/sodium-hydroxide/

- National Center for Biotechnology Information. (2021). Sodium Hydroxide. Retrieved from https://pubchem.ncbi.nlm.nih.gov/compound/Sodium-hydroxide

Sodium Pca

Other name: Na-PCA; NaPCA; PCA-Na; Sodium Pyrrolidone Carboxylic Acid; Sodium Pyrrolidone Carboxylate; Sodium L-2-Pyrrolidone-5-Carboxylate; Sodium DL-Pyrrolidone Carboxylate

Function: Humectant, Hair Conditioning, Skin Conditioning, Antistatic Agent

1. Definition Sodium Pca:

Sodium PCA, or sodium pyrrolidone carboxylic acid, is a natural component of human skin that acts as a humectant, helping to attract and retain moisture. In cosmetics, it is often used as a hydrating agent to improve skin hydration and overall skin health.

2. Use:

Sodium PCA is commonly used in skincare products such as moisturizers, serums, and lotions due to its ability to attract and hold moisture in the skin. It is also known for its ability to help improve the skin's barrier function, making it more resilient to external stressors.

3. Usage Sodium Pca:

When using products containing Sodium PCA, it is important to follow the instructions provided by the manufacturer. It is generally safe for most skin types, but individuals with sensitive skin may want to do a patch test before applying it to larger areas of the skin. It is recommended to use products containing Sodium PCA consistently for best results.

4. References:

- Draelos, Z. D. (2015). Cosmetic Formulation of Skin Care Products. CRC Press.

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

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

Tocopherol (Vitamin E)

Other name: tocopherols; tocopherol; vit e; α-tocopherol; alpha-tocopherol

Function:

1. Definition Tocopherol (Vitamin E):

Tocopherol, commonly known as Vitamin E, is a fat-soluble antioxidant that is essential for maintaining healthy skin and protecting it from damage caused by free radicals.

2. Use:

Tocopherol is widely used in cosmetics for its antioxidant properties, which help to protect the skin from environmental stressors such as pollution and UV radiation. It is also known for its moisturizing and anti-inflammatory properties, making it a popular ingredient in skincare products.

3. Usage Tocopherol (Vitamin E):

Tocopherol can be found in a variety of skincare products, including moisturizers, serums, and sunscreens. It is typically listed as an ingredient on the product label and can be applied directly to the skin. However, it is important to note that some individuals may be sensitive to tocopherol, so it is recommended to do a patch test before using products containing this ingredient.

4. References:

- Lin, F.-H., Lin, J.-Y., Gupta, R. D., Tournas, J. A., Burch, J. A., Selim, M. A., … & Fisher, G. J. (2005). Ferulic acid stabilizes a solution of vitamins C and E and doubles its photoprotection of skin. Journal of Investigative Dermatology, 125(4), 826-832.

- Thiele, J. J., Hsieh, S. N., Briviba, K., Sies, H. (1999). Protein oxidation in human stratum corneum: susceptibility of keratins to oxidation in vitro and presence of a keratin oxidation gradient in vivo. Journal of Investigative Dermatology, 113(3), 335-339.

- Nachbar, F., Korting, H. C. (1995). The role of vitamin E in normal and damaged skin. Journal of Molecular Medicine, 73(1), 7-17.

Water

Other name: Aqua; H2O; Eau; Aqueous; Acqua

Function: Solvent

1. Definition Water:

Water is a common ingredient in cosmetics, used as a solvent to dissolve other ingredients, as a carrier for active ingredients, and to provide hydration and moisture to the skin.

2. Use:

Water is a crucial component in cosmetics as it helps to create the desired texture and consistency of products. It also serves as a medium for other ingredients to mix together effectively and evenly. Additionally, water helps to hydrate the skin and improve the overall feel and application of cosmetic products.

3. Usage Water:

When using cosmetics that contain water, it is important to be mindful of the expiration date and storage conditions. Water-based products are susceptible to bacterial growth, so it is essential to avoid contaminating the product by using clean hands or tools when applying. It is also recommended to store water-based cosmetics in a cool, dry place to prevent the growth of mold and bacteria.

4. References:

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

- Winter, R. (2009). A consumer's dictionary of cosmetic ingredients: complete information about the harmful and desirable ingredients found in cosmetics and cosmeceuticals. Crown.

- Begoun, P. (2003). Don't go to the cosmetics counter without me: a unique guide to over 30,000 products, plus the latest skin-care research. Beginning Press.

Xanthan Gum

Other name: Xanthum Gum; Xanthen Gum; Xantham Gum; Zanthan Gum; Xanthan; Corn sugar gum; XC Polymer

Function: Skin Conditioning, Viscosity Controlling, Viscosity Increasing Agent, Emulsion Stabilising, Binding Agent, Binding, Surfactant - Emulsifying Agent, Gel Forming

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.