

FAQ (Frequently Asked Questions)
1. What is PEG‑90M?
PEG‑90M (Polyethylene Glycol‑90M) is a high‑molecular‑weight, water‑soluble polymer derived from ethylene oxide. It typically appears as a white or off‑white powder and is widely used as a thickener, stabilizer, emulsifier, solvent, binder, and film‑forming agent in various personal care formulations.
2. What are the CAS Number and INCI Name of PEG‑90M?
CAS Number: 25322‑68‑3
INCI Name: PEG‑90M
3. What benefits does PEG‑90M offer in personal care products?
Thickening & Viscosity Control: Enhances texture and mouthfeel in creams, lotions, shampoos and gels.
Emulsion Stabilisation: Helps to maintain stable oil‑in‑water formulations over time.
Humectant & Hydration: Attracts moisture to skin and hair surfaces, improving hydration and shine
Making Cosmetics.
Film-Forming & Binder: Promotes cohesion of ingredients and forms a continuous, uniform layer on application.
Solvent & Surfactant: Enhances ingredient solubility and compatibility, promoting uniform spreadability.
4. Which product types commonly use PEG‑90M?
PEG‑90M is featured in a range of personal care categories:
Skin care & Color Cosmetics: Creams, lotions, serums, foundations for improved texture and stability
Hair care: Shampoos, conditioners, styling gels/mousses for thickness, hydration, and shine
Sun care & Cleansers: Offers viscosity control and emulsification in sunscreens, bath gels, and cleansing products
5. Is PEG‑90M safe for use in cosmetics?
Yes. PEG‑90M is generally recognized as safe for topical use in personal care products when used at recommended concentrations (~0.1–1 %). However, trace contaminants such as 1,4‑dioxane or residual ethylene oxide may be present depending on purity — sourcing from reputable manufacturers is therefore recommended.
6. Can PEG‑90M cause skin irritation?
PEG‑90M is typically non‑irritating and suitable for most skin types. However, sensitive individuals should perform a patch test before use, as high‑purity standards help to reduce possible reactions .
7. Is PEG‑90M environmentally friendly?
PEG‑90M, being synthetic and water‑soluble, is generally considered environmentally benign. It doesn't readily accumulate, but like other PEGs, it isn't readily biodegradable and may persist in water systems. It's crucial to use responsibly and within environmental safety guidelines.
8. What are alternatives to PEG‑90M in formulations?
Depending on formulation goals, alternatives include:
Glycerin: Humectant and moisturizer
Cetearyl Alcohol / Glyceryl Stearate / Sorbitan Stearate: Emulsifiers/thickeners
Natural gums (e.g., xanthan gum) & biodegradable polymers: For clean‑label or eco‑friendly products
9. Typical usage levels of PEG‑90M?
Manufacturers typically recommend usage in the range of 0.1–1 % in personal care formulations .
10. How should PEG‑90M be stored and handled?
Store in a cool, dry, light‑protected environment. Use in clean, controlled manufacturing settings to maintain purity and avoid contamination