Glycine soja (Soybean) protein
AKA: Soybean Protein
Allergen Warning
⚠️ Soy
Plant-Derived Synthetic
Emulsifier
Skin Conditioner
Hair Care
Amino Acid
Clean
Glycine Soja (Soybean) Protein is a cosmetic ingredient used as emulsifying, hair conditioning, skin conditioning. Rated low hazard by EWG. Assessed as safe by the CIR.
CAS #
9010-10-0
Form
Powder
Functions
Emulsifying
Forces oil and water to stay mixed instead of separating into layers. The unsung hero holding your lotion together.
Hair Conditioning
A catch-all term for ingredients that improve how skin looks and feels — softer, smoother, more supple. The workhorse behind most moisturizers.
Skin Conditioning
A catch-all term for ingredients that improve how skin looks and feels — softer, smoother, more supple. The workhorse behind most moisturizers.
Conditions Hair
Conditions Skin
Emulsifier
Anti-Aging Benefits
Antioxidant Protection
Reduces Inflammation
Softens and detangles hair
Mixes oil and water
Traditional Use
Soybeans have been a dietary staple in East Asian traditional medicine for thousands of years. Isolated soy protein became popular in modern skincare during the 1990s-2000s as a plant-based alternative to collagen for promoting skin smoothness and elasticity.
Skin Types
●all-skin-types
Best For
Loss of Elasticity
Pregnancy & Breastfeeding Safe
Yes
The paper trail
🔬Peer-reviewed1 paper →
⚖️Regulatory1 listing →
🛡️Safety-assessed2 reviews →
Counts, not a verdict. A listing isn't a study. The trail, you decide.
Verified Jun 2026
Data: Kew POWO · CosIng · EWG · CIR