murphyCeteareth-18
molecular structure · PubChem
AKA: PEG-18 Cetearyl Ether
Plant-Derived
Cleanser
Emulsifier
Clean
OriginDerived from cetyl and stearyl alcohols, which are typically sourced from coconut or palm oil. Produced through ethoxylation, where ethylene oxide is chemically bonded to the alcohol blend.
C16-18 alcohols, ethoxylated (18 mol EO average molar ratio)
CAS #
68439-49-6
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-assessed3 reviews →
Counts, not a verdict. A listing isn't a study. The trail, you decide.
EWG
2
CIR
Safe as used
Pregnancy
Yes
Concentration Guide
CIR lists it as not reported to be in use.
CIR · report published 2012
Regulatory Agencies
Verified Jun 2026
Data: CosIng · EWG · CIR