murphyPEG-10 Soy Sterol
molecular structure · PubChem
AKA: Polyethylene Glycol 10 Soy Sterol
Synthetic
Cleanser
Emulsifier
Not Clean
OriginDerived from soybean oil sterols, a plant-derived lipid compound chemically modified for cosmetic use.
Produced through ethoxylation, where ethylene oxide is added to soy sterols to create a surfactant.
Sterols, soya (Glycine soja), ethoxylated (10 mol EO average molar ratio)
CAS #
61791-24-0
Skin Types
●all-skin-types
Best For
Dryness
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.
Emulsifier
Mixes Oil & Water
The paper trail
🔬Peer-reviewednone on file
⚖️Regulatory1 listing →
🛡️Safety-assessed2 reviews →
Counts, not a verdict. A listing isn't a study. The trail, you decide.
EWG
4
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
Not an Eye Irritant
1 study / 1 not irritating (CIR 264)
Concentration Guide
Leave-on0.1–2.1%
Rinse-off0.1–2.6%
0%50%100%
CIR reported use · 2020 survey
Regulatory Agencies
Verified Jun 2026
Data: CosIng · EWG · CIR