Polyglyceryl-8 Stearate
AKA “Polyglyceryl-8 Stearate”
Synthetic
Ingredient Facts
Polyglyceryl-8 stearate
Synthetic · Emollient · EWG: 4
Plant-Derived Synthetic
Emollient
Cleanser
Emulsifier
Skin Conditioner
Plant Oil
Synthetic
Clean
A naturally-derived emulsifier that helps blend oil and water ingredients together, creating a smooth, stable texture that feels luxurious on skin.
CAS #
37349-34-1, 75719-57-2
See origin →
Functions
Emulsifying
Forces oil and water to stay mixed instead of separating into layers. The unsung hero holding your lotion together.
Emollient
Fills in the tiny cracks between skin cells to make everything feel smooth and soft. The "silky finish" ingredient.
Skin Conditioning
A catch-all term for ingredients that improve how skin looks and feels — softer, smoother, more supple. The workhorse behind most moisturizers.
Emulsifier
Mixes Oil & Water
Traditional Use
A synthetic emulsifier combining glycerin with stearic acid, a fatty acid present in animal fats and plant oils historically used in soap-making. Modernized for stable cosmetic formulations.
Skin Types
●all-skin-types
Best For
General
Melanin-Rich Skin
Suitable
Pregnancy & Breastfeeding Safe
Yes
Verified Feb 2026
Data: CosIng · EWG · CIR