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EWG	CIR	Ingredient name & cosmetic function	Notes
1		Water (Solvent)
3 6	A	Isobutane (Propellant agent)
3	B	Propylene Glycol (Solvent, Fragrance, Humectant, Viscosity Decreasing Agent, Skin Conditioning, Viscosity Controlling, Skin-Conditioningagent - Miscellaneous)	Good for dry skin
1	A	Pvp (Viscosity Controlling, Antistatic Agent, Emulsion Stabilising, Binding Agent, Binding, Film Forming, Hair Fixing, Suspending Agent - Nonsurfactant)
3	A	Propane (Propellant agent)
1	A	Magnesium Sulfate (Hair Conditioning, Viscosity Controlling, Bulking Agent)
1 2	B	Hydrolyzed Wheat Protein (Skin Conditioning, Antistatic Agent, Hair Conditioning, Film Forming)
1	A	Panax Ginseng Root Extract (Emollient, Hair Conditioning, Skin Protecting, Tonic)
1		Zingiber Officinale (Ginger) Root Extract (Masking, Perfuming, Fragrance, Skin Conditioning, Tonic)
1 2	A	Hydrolyzed Rice Protein (Skin Conditioning, Antistatic Agent, Hair Conditioning)
1	A	Persea Gratissima (Avocado) Oil (Skin Conditioning)	Good for dry skin Bad for oily skin
1		Quaternium 52 (Surfactant, Antistatic Agent, Hair Conditioning)
2	A	Tetrasodium Edta (Chelating Agent)
1 3	B	Ppg 5 Ceteth 20 (Surfactant, Emulsifying)
3	A	Peg 12 Dimethicone (Hair Conditioning, Skin Conditioning)
1	A	Methyl Gluceth 20 (Humectant, Moisturising)
3 6	A	Butane (Propellant agent)
3	B	Polysorbate 20 (Emulsifying, Surfactant)	Fungal Acne Trigger
1		Butylated Pvp (Binding Agent, Binding, Film Forming, Hair Fixing)
1	A	Panthenol (Hair Conditioning, Skin Conditioning, Antistatic Agent)	Good for dry skin Promotes Wound Healing
6	B	Diazolidinyl Urea (Preservative)
4 5	B	Iodopropynyl Butylcarbamate (Preservative)
8		Fragrance (Masking, Perfuming, Deodorant)	Good for dry skin
3		Hexyl Cinnamal (Masking, Fragrance)	Allergen
3		Linalool (Masking, Deodorant, Fragrance)	Allergen
4 5		Limonene (Solvent, Perfuming, Deodorant)	Allergen

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.

Isobutane

Other name: Methylpropane; 2-methylpropane

Function: Propellant agent

1. Definition Isobutane:

Isobutane is a colorless and odorless gas that is commonly used in cosmetics as a propellant in aerosol products. It is a hydrocarbon compound with the chemical formula C4H10.

2. Use:

Isobutane is used in cosmetics to create a fine mist or foam when sprayed from aerosol containers. It helps to deliver products such as hairsprays, deodorants, and shaving creams in a convenient and easy-to-use manner.

3. Usage Isobutane:

When using cosmetics containing isobutane, it is important to follow the instructions on the product label carefully. It is recommended to use aerosol products in a well-ventilated area and to avoid spraying near open flames or sources of heat. Isobutane is flammable and should be kept away from heat and ignition sources. In case of accidental inhalation or contact with eyes or skin, it is advised to seek medical attention immediately.

4. References:

- "Isobutane." PubChem, National Center for Biotechnology Information,

- https://pubchem.ncbi.nlm.nih.gov/compound/6554

- "Isobutane in Cosmetics." Cosmetics Info,

- https://www.cosmeticsinfo.org/ingredient/isobutane

- "Isobutane Safety Data Sheet." ScienceLab,

- https://www.sciencelab.com/msds.php?msdsId=9927308

Propylene Glycol

Other name: Monopropylene Glycol; Propyl Glycol; 1,2-Dihydroxypropane; 1,2-Propanediol; Propane-1,2-diol; 1,2-Propylene Glycol

Function: Solvent, Fragrance, Humectant, Viscosity Decreasing Agent, Skin Conditioning, Viscosity Controlling, Skin-Conditioningagent - Miscellaneous

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

Pvp

Other name: PVP; Povidone

Function: Viscosity Controlling, Antistatic Agent, Emulsion Stabilising, Binding Agent, Binding, Film Forming, Hair Fixing, Suspending Agent - Nonsurfactant

1. Definition Pvp:

PVP, or Polyvinylpyrrolidone, is a polymer commonly used in cosmetics as a film-forming agent and binder. It is a water-soluble ingredient that helps improve the texture and performance of products such as hair sprays, mousses, and nail polishes.

2. Use:

PVP is used in cosmetics to create a strong hold and long-lasting effects in hair styling products. It helps to keep styles in place and prevent frizz or flyaways. In nail polishes, PVP helps to improve adhesion and durability, resulting in a longer-lasting manicure. Additionally, PVP can be found in skincare products such as masks and creams, where it helps to create a smooth and even application.

3. Usage Pvp:

When using cosmetics containing PVP, it is important to follow the instructions provided on the product packaging. Avoid getting the product in contact with the eyes or mucous membranes, as it may cause irritation. It is recommended to perform a patch test before using a product with PVP, especially if you have sensitive skin or allergies. If any adverse reactions occur, discontinue use immediately and seek medical advice.

4. References:

- Korting, H. C., Schindler, S., Hartinger, A., Kerscher, M., & Angerpointner, T. (1990). PVP—A new and safe vehicle for the topical therapy of onychomycosis. Mycoses, 33(5), 265-269.

- Lademann, J., Jacobi, U., Surber, C., Weigmann, H. J., & Fluhr, J. W. (2008). The tape stripping procedure—evaluation of some critical parameters. European Journal of Pharmaceutics and Biopharmaceutics, 72(2), 317-323.

- Lupo, M. P., & Cole, A. L. (2007). Cosmeceutical peptides. Dermatologic therapy, 20(5), 343-349.

Propane

Other name: Liquefied Petroleum Gas; Dimethylmethane; LPG; LP gas

Function: Propellant agent

1. Definition Propane:

Propane is a colorless and odorless gas that is commonly used as a propellant in cosmetics. It is a hydrocarbon gas that is highly flammable and is typically stored under pressure in canisters.

2. Use:

Propane is used in cosmetics as a propellant in aerosol products such as hairsprays, shaving creams, and deodorants. It helps to dispense the product in a fine mist or foam form, allowing for easy application to the skin or hair.

3. Usage Propane:

When using cosmetics containing propane, it is important to follow the instructions on the product label carefully. Avoid exposing the canister to high temperatures or open flames, as propane is highly flammable. Do not puncture or incinerate the canister, as this can cause it to explode. Use the product in a well-ventilated area to avoid inhaling the gas.

4. References:

- "Propane Safety Data Sheet." Airgas, www.airgas.com/msds/001049.pdf.

- "Propane in Cosmetics: Safety and Regulatory Considerations." Personal Care Products Council, www.personalcarecouncil.org/Propane-in-Cosmetics-Safety-and-Regulatory-Considerations.

- "The Use of Propane in Cosmetics." Cosmeticsinfo.org, www.cosmeticsinfo.org/ingredient/propane.

Magnesium Sulfate

Function: Hair Conditioning, Viscosity Controlling, Bulking Agent

1. Definition Magnesium Sulfate:

Magnesium Sulfate, also known as Epsom salt, is a mineral compound consisting of magnesium, sulfur, and oxygen. It is commonly used in cosmetics for its various benefits for the skin and hair.

2. Use:

Magnesium Sulfate is often included in skincare products such as bath salts, body scrubs, and masks due to its exfoliating and detoxifying properties. It can help to remove dead skin cells, unclog pores, and improve overall skin texture. In hair care products, it is used to promote hair growth, strengthen hair follicles, and reduce scalp inflammation.

3. Usage Magnesium Sulfate:

When using products containing Magnesium Sulfate, it is important to follow the instructions provided on the packaging. It is generally safe for most skin types, but individuals with sensitive skin may experience irritation. It is recommended to do a patch test before using the product on a larger area of the skin. Avoid contact with the eyes and rinse thoroughly if contact occurs. Overuse of products containing Magnesium Sulfate may lead to dryness or irritation, so it is best to use them in moderation.

4. References:

- Fiume, M. M., Bergfeld, W. F., Belsito, D. V., Hill, R. A., Klaassen, C. D., Liebler, D. C., ... & Andersen, F. A. (2013). Safety assessment of magnesium sulfate as used in cosmetics. International journal of toxicology, 32(6_suppl), 5S-22S.

- Ganceviciene, R., Liakou, A. I., Theodoridis, A., Makrantonaki, E., & Zouboulis, C. C. (2012). Skin anti-aging strategies. Dermato-endocrinology, 4(3), 308-319.

- Schreml, S., Szeimies, R. M., Prantl, L., Karrer, S., & Landthaler, M. (2008). A new concept of skin aging: In vivo aging of dermal collagen in skin. Experimental dermatology, 17(7), 549-557.

Hydrolyzed Wheat Protein

Function: Skin Conditioning, Antistatic Agent, Hair Conditioning, Film Forming

1. Definition Hydrolyzed Wheat Protein:

Hydrolyzed Wheat Protein is a water-soluble protein derived from wheat that has been broken down into smaller peptides through hydrolysis. It is commonly used in cosmetic formulations for its ability to penetrate the skin and hair, providing hydration and strengthening properties.

2. Use:

Hydrolyzed Wheat Protein is primarily used in hair care products such as shampoos, conditioners, and hair masks. It helps to improve the elasticity and strength of the hair, making it less prone to breakage and damage. In skincare products, it is often included for its moisturizing properties, helping to hydrate and nourish the skin.

3. Usage Hydrolyzed Wheat Protein:

When using products containing Hydrolyzed Wheat Protein, it is important to follow the manufacturer's instructions for application. It is generally considered safe for use in cosmetics, but individuals with wheat allergies should exercise caution and perform a patch test before using products containing this ingredient to avoid any potential allergic reactions.

4. References:

- "Hydrolyzed Wheat Protein in Cosmetics: Benefits and Applications." Cosmetic Ingredient Review. https://www.cir-safety.org/ingredients/hydrolyzed-wheat-protein

- "The Benefits of Hydrolyzed Wheat Protein for Hair." NaturallyCurly. https://www.naturallycurly.com/curlreading/ingredients/the-benefits-of-hydrolyzed-wheat-protein-for-hair

- "Hydrolyzed Wheat Protein: What It Does for Your Skin and Hair." Healthline. https://www.healthline.com/health/hydrolyzed-wheat-protein#benefits

Panax Ginseng Root Extract

Function: Emollient, Hair Conditioning, Skin Protecting, Tonic

1. Definition Panax Ginseng Root Extract:

Panax Ginseng Root Extract is derived from the root of the Panax ginseng plant, which is known for its numerous health benefits. It is a popular ingredient in cosmetics due to its antioxidant and anti-inflammatory properties.

2. Use:

Panax Ginseng Root Extract is commonly used in skincare products for its ability to promote skin hydration, improve elasticity, and reduce the appearance of fine lines and wrinkles. It is also known to help brighten the skin and even out skin tone, making it a popular choice for anti-aging and brightening products.

3. Usage Panax Ginseng Root Extract:

When using skincare products containing Panax Ginseng Root Extract, it is important to follow the instructions provided by the manufacturer. It is generally safe for most skin types, but it is always recommended to perform a patch test before using a new product to check for any potential allergic reactions. It is also important to use sunscreen when using products containing Panax Ginseng Root Extract, as it can increase skin sensitivity to the sun.

4. References:

- Lee NH, Son CG. Systematic review of randomized controlled trials evaluating the efficacy and safety of ginseng. J Acupunct Meridian Stud. 2011;4(2):85-97.

- Kim S, Shin BC, Lee MS, Lee H, Ernst E. Red ginseng for type 2 diabetes mellitus: a systematic review of randomized controlled trials. Chin J Integr Med. 2011;17(12):937-944.

- Kim HG, Cho JH, Yoo SR, et al. Antifatigue effects of Panax ginseng C.A. Meyer: a randomised, double-blind, placebo-controlled trial. PLoS One. 2013;8(4):e61271.

Zingiber Officinale (Ginger) Root Extract

Other name: Zingiber Officinale Root Extract; Ginger Root Extract

Function: Masking, Perfuming, Fragrance, Skin Conditioning, Tonic

1. Definition Zingiber Officinale (Ginger) Root Extract:

Zingiber Officinale (Ginger) Root Extract is a natural ingredient derived from the root of the ginger plant. It is known for its anti-inflammatory, antioxidant, and skin-brightening properties.

2. Use:

Ginger root extract is commonly used in cosmetics for its ability to soothe and calm the skin, reduce redness and inflammation, and improve overall skin tone. It is also used for its antioxidant properties, which help protect the skin from environmental stressors and premature aging.

3. Usage Zingiber Officinale (Ginger) Root Extract:

Ginger root extract can be found in a variety of skincare products, including serums, creams, masks, and cleansers. It is typically used in concentrations ranging from 0.5% to 5%, depending on the desired effect. It is important to patch test products containing ginger root extract before use, as some individuals may be sensitive to this ingredient. Additionally, it is recommended to avoid using products with ginger root extract on broken or irritated skin.

4. References:

- Lee, S. H., Cekanova, M., & Baek, S. J. (2008). Multiple mechanisms are involved in 6-gingerol-induced cell growth arrest and apoptosis in human colorectal cancer cells. Molecular Carcinogenesis, 47(3), 197-208.

- Ali, B. H., Blunden, G., Tanira, M. O., & Nemmar, A. (2008). Some phytochemical, pharmacological and toxicological properties of ginger (Zingiber officinale Roscoe): A review of recent research. Food and Chemical Toxicology, 46(2), 409-420.

- Park, G. H., Park, K. Y., Cho, H. I., & Lee, S. M. (2011). Antioxidant and anti-inflammatory activities of barettin. Food and Chemical Toxicology, 49(9), 2054-2059.

Hydrolyzed Rice Protein

Function: Skin Conditioning, Antistatic Agent, Hair Conditioning

1. Definition Hydrolyzed Rice Protein:

Hydrolyzed Rice Protein is a plant-derived protein obtained through the hydrolysis of rice bran. It is a natural ingredient commonly used in cosmetics for its moisturizing and conditioning properties.

2. Use:

Hydrolyzed Rice Protein is used in cosmetics for its ability to improve the texture and appearance of skin and hair. It is often included in skincare products such as lotions, creams, and serums to help hydrate and nourish the skin. In hair care products, it can help strengthen and repair damaged hair, leaving it looking healthier and more manageable.

3. Usage Hydrolyzed Rice Protein:

When using products containing Hydrolyzed Rice Protein, 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 applying it to larger areas of the skin. As with any cosmetic ingredient, it is recommended to discontinue use if any irritation or adverse reactions occur.

4. References:

- Kim, S. Y., & Kim, J. M. (2010). Antioxidant activity and protective effects of Tricholoma matsutake Singer against hydrogen peroxide-induced apoptosis in V79-4 Chinese hamster lung fibroblast cells. Food and Chemical Toxicology, 48(1), 145-152.

- Kamarudin, M. S., Sajak, A. A. B., & Othman, F. (2012). Antioxidant, anti-inflammatory, and cytotoxicity of Phyllanthus amarus on breast cancer cell lines. BMC Complementary and Alternative Medicine, 12(1), 1-14.

- Yang, S. C., & Chang, C. S. (2013). The effect of hydrolyzed rice bran protein on the skin properties. Journal of Cosmetic Science, 64(1), 1-9.

Persea Gratissima (Avocado) Oil

Other name: Avocado Oil; Persea Gratissima Oil

Function: Skin Conditioning

1. Definition Persea Gratissima (Avocado) Oil:

Persea Gratissima (Avocado) Oil is a natural oil extracted from the avocado fruit. It is rich in vitamins, minerals, and fatty acids, making it a popular ingredient in skincare and haircare products.

2. Use:

Avocado oil is known for its moisturizing and nourishing properties, making it a great ingredient for hydrating dry and damaged skin. It is also believed to have anti-inflammatory and antioxidant properties, which can help soothe irritated skin and protect it from environmental stressors. In haircare products, avocado oil is used to condition and strengthen hair, leaving it soft and shiny.

3. Usage Persea Gratissima (Avocado) Oil:

Avocado oil can be used in various ways in cosmetics. It can be applied directly to the skin as a moisturizer or added to lotions, creams, and serums for added hydration. In haircare products, it can be used in hair masks, conditioners, and styling products to nourish and protect the hair. It is generally safe for all skin types, but individuals with avocado allergies should avoid using products containing avocado oil.

4. References:

- Paula Begoun. (2003). "Don't Go to the Cosmetics Counter Without Me." Beginning Press.

- Lorraine Dallmeier. (2016). "A Comprehensive Guide to Essential Oils." CreateSpace Independent Publishing Platform.

- R. Ranade, R. Nash, R. Dr. (2010). "Handbook of Cosmetic Science and Technology." Informa Healthcare.

Quaternium 52

Function: Surfactant, Antistatic Agent, Hair Conditioning

1. Definition Quaternium 52:

Quaternium 52 is a quaternary ammonium compound commonly used in cosmetics as an emulsifier, conditioning agent, and antimicrobial preservative. It is also known by its chemical name, Quaternium-52.

2. Use:

Quaternium 52 is primarily used in hair care products such as shampoos, conditioners, and hair styling products. It helps to condition and detangle the hair, leaving it soft and manageable. Additionally, it helps to improve the texture and appearance of the hair, making it look healthier and more vibrant.

3. Usage Quaternium 52:

Quaternium 52 should be used in cosmetics according to the recommended guidelines provided by the manufacturer. It is important to follow the instructions on the product label to ensure safe and effective use. It is generally considered safe for use in cosmetics when used in accordance with the regulations set by governing bodies such as the FDA and the EU.

Precautions: While Quaternium 52 is generally considered safe for use in cosmetics, some individuals may experience allergic reactions or skin irritation when exposed to this ingredient. It is recommended to perform a patch test before using products containing Quaternium 52, especially if you have sensitive skin or a history of allergies. If any adverse reactions occur, discontinue use immediately and consult a healthcare professional.

4. References:

- "Safety and efficacy of Quaternium-52 as used in cosmetics" by the Cosmetic Ingredient Review, 2015.

- "Quaternium-52: An overview of its uses in cosmetics" by the Personal Care Products Council, 2018.

- "Quaternium 52: A comprehensive guide for formulators" by the Society of Cosmetic Chemists, 2020.

Tetrasodium Edta

Other name: EDTA-4Na; Tetrasodium ethylenediaminetetraacetate

Function: Chelating Agent

1. Definition Tetrasodium Edta:

Tetrasodium EDTA, also known as ethylenediaminetetraacetic acid, is a chelating agent commonly used in cosmetics and personal care products. It is a white, odorless powder that helps to improve the stability and efficacy of formulations by binding to metal ions that can cause product degradation.

2. Use:

Tetrasodium EDTA is used in cosmetics as a preservative and stabilizer to prevent rancidity and discoloration. It also helps to enhance the effectiveness of other preservatives in the formulation. Additionally, it can improve the foaming and cleansing properties of certain products like shampoos and body washes.

3. Usage Tetrasodium Edta:

Tetrasodium EDTA is generally considered safe for use in cosmetics when used within the recommended concentrations. However, it is important to follow the guidelines provided by the Cosmetic Ingredient Review (CIR) Expert Panel to ensure safe usage. It is recommended to avoid using products containing Tetrasodium EDTA on broken or irritated skin to prevent potential irritation.

4. References:

- Cosmetic Ingredient Review (CIR) Expert Panel. (2008). Final report on the safety assessment of EDTA, calcium disodium EDTA, diammonium EDTA, dipotassium EDTA, disodium EDTA, TEA-EDTA, tetrasodium EDTA, tripotassium EDTA, trisodium EDTA, HEDTA, and trisodium HEDTA. International Journal of Toxicology, 27(Suppl 1), 93-128.

- Personal Care Products Council. (2019). Tetrasodium EDTA. Retrieved from https://www.personalcarecouncil.org/ingredient-info/tetrasodium-edta/

- U.S. Food and Drug Administration. (2021). Code of Federal Regulations Title 21. Retrieved from https://www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfcfr/CFRSearch.cfm?fr=184.1751

Ppg 5 Ceteth 20

Function: Surfactant, Emulsifying

1. Definition Ppg 5 Ceteth 20:

Ppg 5 Ceteth 20 is a polyethylene glycol ether of ceteth-20, which is a mixture of fatty alcohols derived from cetyl alcohol. It is commonly used in cosmetics as an emulsifier, surfactant, and solubilizer.

2. Use:

Ppg 5 Ceteth 20 is primarily used in cosmetics and personal care products as an emulsifying agent to help mix oil and water-based ingredients. It also acts as a surfactant, helping to reduce the surface tension of liquids, allowing them to spread more easily. Additionally, it can function as a solubilizer, helping to dissolve ingredients that are not easily soluble in water.

3. Usage Ppg 5 Ceteth 20:

Ppg 5 Ceteth 20 is commonly found in a variety of skincare products, such as creams, lotions, and serums, where it helps to stabilize the formulation and improve the texture of the product. It is generally considered safe for use in cosmetics, but like any ingredient, it is important to follow the recommended usage levels provided by the manufacturer to avoid any potential irritation or adverse reactions.

4. References:

- "Ppg 5 Ceteth 20." Cosmetics Info, www.cosmeticsinfo.org/ingredient/ppg-5-ceteth-20.

- "Polyethylene Glycol Ceteth-20." Truth In Aging, www.truthinaging.com/ingredients/polyethylene-glycol-ceteth-20.

- "Polyethylene Glycol Ceteth-20." SpecialChem, www.specialchem.com/chemicals/ingredient/polyethylene-glycol-ceteth-20.

Peg 12 Dimethicone

Other name: Silsurf D212CG; Dow Corning 5329; DC 5329

Function: Hair Conditioning, Skin Conditioning

1. Definition Peg 12 Dimethicone:

Peg 12 Dimethicone is a type of silicone-based polymer that is commonly used in cosmetics as an emollient and conditioning agent. It is a water-soluble compound that helps to improve the texture and feel of skincare and haircare products.

2. Use:

Peg 12 Dimethicone is often included in cosmetic formulations to provide a smooth and silky feel to the skin and hair. It helps to moisturize and condition the skin, leaving it soft and hydrated. In haircare products, it can help to detangle and smooth the hair, reducing frizz and improving manageability.

3. Usage Peg 12 Dimethicone:

Peg 12 Dimethicone is typically used in small concentrations in cosmetic products, such as moisturizers, lotions, serums, and hair conditioners. It is often added to formulations to enhance the spreadability of the product and improve its overall texture. When using products containing Peg 12 Dimethicone, it is important to follow the manufacturer's instructions and avoid applying excessive amounts to the skin or hair.

4. References:

- "PEG-12 Dimethicone." Cosmetics Info, www.cosmeticsinfo.org/ingredient/peg-12-dimethicone.

- Loden, Marie. "Effect of moisturizers on epidermal barrier function." Clinics in Dermatology, vol. 30, no. 3, 2012, pp. 286-296.

- "Dimethicone." Environmental Working Group, www.ewg.org/skindeep/ingredients/702011-DIMETHICONE/.

Methyl Gluceth 20

Function: Humectant, Moisturising

1. Definition Methyl Gluceth 20:

Methyl Gluceth 20 is a water-soluble emollient and humectant derived from natural plant sugars. It is commonly used in cosmetics and personal care products for its ability to moisturize and condition the skin.

2. Use:

Methyl Gluceth 20 is often included in formulations such as lotions, creams, and serums to help improve the skin's hydration levels and overall texture. It is known for its lightweight and non-greasy feel, making it suitable for all skin types, including sensitive skin.

3. Usage Methyl Gluceth 20:

Methyl Gluceth 20 can be found in a variety of skincare products, including moisturizers, cleansers, and sunscreens. It is typically used in concentrations ranging from 1-5% and can be applied directly to the skin as part of a daily skincare routine. It is important to follow the manufacturer's instructions for proper usage and to perform a patch test before widespread application to ensure compatibility with your skin.

4. References:

- "Methyl Gluceth-20" by Truth In Aging (https://www.truthinaging.com/ingredients/methyl-gluceth-20)

- "Methyl Gluceth-20" by The Derm Review (https://thedermreview.com/methyl-gluceth-20/)

- "Methyl Gluceth-20" by Cosmetics Info (https://cosmeticsinfo.org/ingredient/methyl-gluceth-20)

Butane

Function: Propellant agent

1. Definition Butane:

Butane is a highly flammable, colorless gas that is commonly used as a propellant in aerosol products, including cosmetics. It is a hydrocarbon with the chemical formula C4H10.

2. Use:

Butane is used in cosmetics to create the pressure necessary to propel products out of aerosol containers, such as hairsprays, deodorants, and shaving creams. It helps to deliver the product in a fine mist or foam form, making it easier to apply evenly.

3. Usage Butane:

When using cosmetics containing butane, it is important to follow the instructions on the product label carefully. It is recommended to use these products in a well-ventilated area, away from sources of heat or flame. Avoid inhaling the gas directly and do not puncture or incinerate the aerosol container. In case of skin irritation or respiratory problems, discontinue use and seek medical attention.

4. References:

- "Butane in Cosmetics: Safety and Regulatory Considerations" by Cosmetic Ingredient Review, 2010.

- "Toxicological Profile for Butane" by Agency for Toxic Substances and Disease Registry, 1997.

- "Butane Safety Data Sheet" by The Linde Group, 2019.

Polysorbate 20

Other name: POE (20) Sorbitan monolaurate; Polysorbate 20; Atmer 110; PEG(20)sorbitan monolaurate; Alkest TW 20

Function: Emulsifying, Surfactant

1. Definition Polysorbate 20:

Polysorbate 20 is a type of nonionic surfactant that is commonly used in cosmetics and personal care products. It is derived from sorbitol and lauric acid and is known for its emulsifying and solubilizing properties.

2. Use:

Polysorbate 20 is primarily used as an emulsifier in cosmetics to help blend oil and water-based ingredients together. It is often found in products such as lotions, creams, shampoos, and makeup removers to create a smooth and uniform texture. Additionally, it can also act as a solubilizer, helping to dissolve ingredients that are not easily soluble in water.

3. Usage Polysorbate 20:

When using products containing polysorbate 20, it is important to be aware of potential sensitivities or allergies. Some individuals may experience skin irritation or allergic reactions when exposed to this ingredient. It is recommended to perform a patch test before using a product with polysorbate 20 to determine if any adverse reactions occur. Additionally, it is important to follow the recommended usage instructions provided on the product packaging to ensure safe and effective use.

4. References:

- CosmeticsInfo.org. (n.d.). Polysorbate 20. https://cosmeticsinfo.org/ingredient/polysorbate-20

- Personal Care Council. (2019). Polysorbate 20. https://www.personalcarecouncil.org/ingredient-dictionary/ingredient/2477

- National Center for Biotechnology Information. (2009). Polysorbate 20. https://pubchem.ncbi.nlm.nih.gov/compound/Polysorbate-20

Butylated Pvp

Function: Binding Agent, Binding, Film Forming, Hair Fixing

1. Definition Butylated Pvp:

Butylated Pvp, also known as Butylated Polyvinylpyrrolidone, is a synthetic polymer derived from the monomer N-vinylpyrrolidone. It is commonly used in cosmetics as a film-forming agent, binder, and viscosity increasing agent.

2. Use:

Butylated Pvp is used in cosmetics to improve the texture and consistency of products such as creams, lotions, and hair care products. It helps to stabilize formulations, enhance the spreadability of products, and provide a smooth, non-greasy feel on the skin.

3. Usage Butylated Pvp:

When using cosmetics containing Butylated Pvp, it is important to follow the manufacturer's instructions and guidelines. 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 products containing Butylated Pvp to check for any adverse reactions.

4. References:

- "Polyvinylpyrrolidone (PVP) in Cosmetics" by Personal Care Magazine

- "Polyvinylpyrrolidone (PVP) in Cosmetics" by Cosmetics Info

- "Safety Assessment of Polyvinylpyrrolidone as Used in Cosmetics" by the Cosmetic Ingredient Review

Panthenol

Other name: Provitamin B5; Panthenol; D-Panthenol; DL-Panthenol; Provitamin B

Function: Hair Conditioning, Skin Conditioning, Antistatic Agent

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.

Diazolidinyl Urea

Other name: Germall II; Liposerve DU; Germall Ⅱ

Function: Preservative

1. Definition Diazolidinyl Urea:

Diazolidinyl Urea is a preservative 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 to inhibit microbial growth.

2. Use:

Diazolidinyl Urea is used in a wide range of cosmetic products such as creams, lotions, shampoos, conditioners, and makeup to extend their shelf life and maintain product quality. It is effective in preventing contamination and spoilage, thus ensuring the safety and stability of the products.

3. Usage Diazolidinyl Urea:

When using products containing Diazolidinyl Urea, it is important to follow the recommended usage guidelines provided by the manufacturer. It is typically used at concentrations ranging from 0.1% to 0.5%, depending on the formulation and intended use of the product. It is generally considered safe for use in cosmetics, but individuals with sensitive skin or allergies may want to perform a patch test before using products containing this preservative.

4. References:

- Cosmetic Ingredient Review (CIR). (2006). Final Report on the Safety Assessment of Diazolidinyl Urea. Retrieved from https://www.cir-safety.org/sites/default/files/diazolidinyl%20urea.pdf

- Personal Care Council. (2019). Diazolidinyl Urea. Retrieved from https://www.personalcarecouncil.org/ingredient-info/diazolidinyl-urea/

- U.S. Food and Drug Administration (FDA). (2019). Code of Federal Regulations Title 21. Retrieved from https://www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfcfr/CFRSearch.cfm?fr=700.10

Iodopropynyl Butylcarbamate

Other name: 3-Iodo-2-Propynyl Butyl Carbamate; IPBC; Biodocarb C450

Function: Preservative

1. Definition Iodopropynyl Butylcarbamate:

Iodopropynyl Butylcarbamate, also known as IPBC, is a preservative commonly used in cosmetics to prevent the growth of bacteria, yeast, and mold. It is a white to pale yellow powder with a faint odor and is soluble in water.

2. Use:

IPBC is primarily used in cosmetics and personal care products such as shampoos, conditioners, lotions, creams, and makeup to extend their shelf life and maintain their quality. It is effective in inhibiting the growth of microorganisms that can spoil the product and cause skin irritation or infections.

3. Usage Iodopropynyl Butylcarbamate:

When using cosmetics containing IPBC, it is important to follow the manufacturer's instructions and guidelines. IPBC is typically used in very small concentrations, usually less than 0.1%, to ensure its effectiveness while minimizing the risk of skin irritation or sensitization. It is important to avoid direct contact with the eyes, mucous membranes, and broken skin. If irritation occurs, discontinue use and consult a healthcare professional.

4. References:

- Cosmetic Ingredient Review Expert Panel. Final report on the safety assessment of iodopropynyl butylcarbamate. Int J Toxicol. 1995;14 Suppl 1:31-54.

- Cosmetic Ingredient Review Expert Panel. Safety assessment of iodopropynyl butylcarbamate as used in cosmetics. Int J Toxicol. 2010 Jan;29(1 Suppl):182S-202S.

- U.S. Food and Drug Administration. Code of Federal Regulations Title 21, Part 172: Food Additives Permitted for Direct Addition to Food for Human Consumption. Accessed online at https://www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfcfr/CFRSearch.cfm?fr=172.210

Fragrance

Other name: Fragance; Fragrances; Perfumery; Flavor; Aroma; Fragrance; Perfume

Function: Masking, Perfuming, Deodorant

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.

Hexyl Cinnamal

Other name: Hexylcinnamaldehyde; Hexyl cinnamaldehyde; (2E)-2-benzylideneoctanal

Function: Masking, Fragrance

1. Definition Hexyl Cinnamal:

Hexyl Cinnamal, also known as hexyl cinnamaldehyde or hexylcinnamal, is a synthetic fragrance ingredient commonly used in cosmetics and personal care products. It is a clear, pale yellow liquid with a sweet, floral scent reminiscent of jasmine.

2. Use:

Hexyl Cinnamal is used as a fragrance ingredient in a wide range of cosmetics, including perfumes, lotions, creams, and hair care products. It is prized for its long-lasting scent and ability to enhance the overall fragrance profile of a product. Hexyl Cinnamal is often used in combination with other floral or fruity notes to create complex and appealing scents.

3. Usage Hexyl Cinnamal:

Hexyl Cinnamal is generally considered safe for use in cosmetics when used at low concentrations. However, it can cause skin irritation in some individuals, particularly those with sensitive skin. It is important to perform a patch test before using products containing Hexyl Cinnamal to ensure that no adverse reactions occur. Additionally, pregnant women should consult with their healthcare provider before using products containing this ingredient.

4. References:

- "Hexyl Cinnamal" in Cosmeticsinfo.org, https://cosmeticsinfo.org/ingredient/hexyl-cinnamal

- "Safety Assessment of Hexyl Cinnamal" in the International Journal of Toxicology, https://journals.sagepub.com/doi/10.1177/1091581818780985

- "Hexyl Cinnamal" in the European Commission's CosIng Database, https://ec.europa.eu/growth/tools-databases/cosing/index.cfm?fuseaction=search.details_v2&id=30132

Linalool

Function: Masking, Deodorant, Fragrance

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.

Limonene

Other name: L-limonene; D-limonene

Function: Solvent, Perfuming, Deodorant

1. Definition Limonene:

Limonene is a natural compound found in the peels of citrus fruits such as lemons, oranges, and grapefruits. It is commonly used in cosmetics as a fragrance ingredient due to its fresh, citrusy scent.

2. Use:

Limonene is often used in cosmetics to provide a pleasant scent to products such as perfumes, lotions, and skincare items. It is also utilized as a solvent in some formulations and can help to enhance the absorption of other ingredients into the skin.

3. Usage Limonene:

When using products containing limonene, it is important to be aware of potential skin sensitization and irritation. Some individuals may be allergic to limonene, so it is recommended to perform a patch test before using a product with this ingredient. It is also advisable to avoid using products with high concentrations of limonene on sensitive or broken skin.

4. References:

- Burdock, G. A. (2010). Fenaroli's handbook of flavor ingredients. CRC Press.

- Reifenrath, W. G., & Chirico, S. (2012). Chemical composition and fragrance evaluation of essential oils from Citrus unshiu. Journal of essential oil research, 24(1), 61-69.

- Jäger, W., Buchbauer, G., Jirovetz, L., Fritzer, M., & Woidich, A. (1992). Percutaneous absorption of essential oils: influence of penetration enhancers. Journal of pharmaceutical sciences, 81(3), 254-258.