murphyPEG-25 Soy Sterol
molecular structure · PubChem
AKA: Soy Sterol Derivative
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 (25 mol EO average molar ratio)
Skin Types
●all-skin-types
Best For
General
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
Locks In Moisture
Mixes Oil & Water
The paper trail
🔬Peer-reviewednone on file
⚖️Regulatory1 listing →
🛡️Safety-assessed3 reviews →
Counts, not a verdict. A listing isn't a study. The trail, you decide.
EWG
5
CIR
Reviewed by CIR
Pregnancy
Yes
CIR Safety Findings
Not an Eye Irritant
1 study / 1 not irritating (CIR 264)
Not a Skin Irritant
1 study / 1 not irritating (CIR 264)
Concentration Guide
CIR's newest survey reports no concentration of use.
CIR · 2020 survey
Regulatory Agencies
Verified Jun 2026
Data: CosIng · EWG · CIR