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Soy Sterol Acetate
AKA “Soybean Sterol Acetate”
Surfactant
Ingredient Facts
Soy sterol acetate
AKA: Soybean Sterol Acetate
Surfactant · Emulsifying · EWG: 4
Synthetic
Cleanser
Emulsifier
Skin Conditioner
Not Clean
Sterols, soybean, acetates
See origin →
Functions
Skin Conditioning
A catch-all term for ingredients that improve how skin looks and feels — softer, smoother, more supple. The workhorse behind most moisturizers.
Emulsifying
Forces oil and water to stay mixed instead of separating into layers. The unsung hero holding your lotion together.
Locks in moisture
Traditional Use
A modern derivative of plant sterols from soybeans. Developed for use in cosmetics as an emollient and skin-conditioning agent with potential anti-inflammatory properties.
Skin Types
●all-skin-types
Best For
Dryness
Pregnancy & Breastfeeding Safe
Caution
Allergen Warning
⚠️ Soy
EWG
4
CIR
Safe as used
Pregnancy
Caution
CIR Safety Findings
Not a Sensitizer
medical-approval
all-shades-safe
Regulatory Status
USA✔ permitted
EU⚠ restricted
JAPAN⚠ restricted
CANADA⚠ restricted
Verified Jun 2026
Data: CosIng · EWG · CIR