murphyGlycine soja (Soybean) protein
AKA: Soybean Protein
Plant-Derived Synthetic
Emulsifier
Skin Conditioner
Hair Care
Amino Acid
Clean
OriginEast Asia
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
Skin Types
●all-skin-types
Best For
Loss of Elasticity
Pregnancy & Breastfeeding Safe
Yes
Allergen Warning
⚠️ Soy
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
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.
EWG
1
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
Not Phototoxic
Animal test found no phototoxicity in the CIR safety assessment (CIR 700)
Not a Skin Irritant
1 study / 1 not irritating (CIR 700)
Not a Sensitizer
1 study / 1 not sensitizing (CIR 700)
Mixed Eye Irritation Results
1 study / 1 mixed (CIR 700)
Concentration Guide
Leave-on0.00004–0.9%
Rinse-off0.0005–0.42%
0%50%100%
CIR reported use · 2014 survey
Regulatory Agencies
Verified Jun 2026
Data: Kew POWO · CosIng · EWG · CIR