C20-40 Pareth-10 is a nonionic polyethylene glycol ether derived from long-chain fatty alcohols. It's used in personal care to emulsify oils with water, aid rinse-off cleansing systems, and improve dispersion and stability in creams and gels.
Helps oil and water mix and aids rinse-off cleansing.
Category
Emulsifying, Cleansing
Type
Emulsifier
Ratings
Overall Rating
Good
Comedogenic Risk
None
Not typically evaluated for comedogenicity — no standardized rating available.
Our take
Is C20-40 Pareth-10 a Good Ingredient?
It reliably emulsifies and solubilizes oils while remaining stable and generally low-irritating at typical use levels, which earns a Good rating; its performance is well established for cleansing and rinse-off systems without notable sensitization reports.
What it does
Skin Benefits
Promotes smooth, uniform textures that help lift oily buildup and makeup from the skin, and encourages easy rinse-off with a cleaner after-feel.
Where you'll find it
Uses in Skincare & Cosmetics
Common in gel cleansers, milk cleansers, and makeup-removing lotions, and also used to help disperse actives in creams and serums.
Before you use it
Safety
Generally low irritation, though as a surfactant it can cause mild stinging or dryness, especially at higher concentrations or around the eyes. Patch test if you're reactive and avoid contact with mucous membranes.