C11-15 Pareth-15
molecular structure · PubChem
AKA: Polyoxyethylene alkyl ether
Synthetic
Cleanser
Emulsifier
Clean
OriginDerived from fatty alcohol ethoxylates, a class of synthetic nonionic surfactants created from petroleum or plant-based alcohols. Produced through ethoxylation, where ethylene oxide is added to C11-15 fatty alcohols under catalytic conditions.
Alcohols, C11-15, ethoxylated (15 mol EO average molar ratio)
CAS #
173244-48-9
Form
Liquid
Skin Types
●all-skin-types, gentle
Best For
General
Pregnancy & Breastfeeding Safe
Yes
Functions
Cleansing
Makes oil and water mix so dirt, makeup, and sunscreen can actually be washed away. The reason your face wash foams.
Emulsifying
Forces oil and water to stay mixed instead of separating into layers. The unsung hero holding your lotion together.
Cleansing Surfactant
Emulsifier
Removes Impurities
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.
Verified Jun 2026
Data: CosIng · EWG · CIR
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