Polyoxyl 40 Stearate is a polyethylene glycol ester of stearic acid, classified as a nonionic surfactant and emulsifier for personal care. It's chosen to combine oil and water phases, stabilize creams and lotions, and improve spreadability.
An emulsifier that gives creams a smooth, consistent texture.
Category
Emulsifying
Type
Emulsifier
Ratings
Overall Rating
Good
Comedogenic Risk
None
Not typically evaluated for comedogenicity — no standardized rating available.
Our take
Is Polyoxyl 40 Stearate a Good Ingredient?
It's a well-established nonionic emulsifier that reliably stabilizes oil-in-water systems and improves spread, with a long track record of skin compatibility in leave-on products, solid enough for a Good rating.
What it does
Skin Benefits
Promotes a uniform, creamy texture so products glide on evenly. Helps keep formulas homogenous for a consistent user experience.
Where you'll find it
Uses in Skincare & Cosmetics
Common in lotions, creams, and sunscreens to create stable emulsions. Also used in milky cleansers and makeup products for smooth application.
Before you use it
Safety
Typically low irritation at standard use levels; may cause mild stinging if used near eyes or in high concentrations. No common cosmetic market restrictions noted for general use.