Oleth-50

Oleth-50 molecular structure
molecular structure · PubChem
AKA: Oleyl Ethoxylate 50, Oleth 50, Polyethylene Glycol Monooleyl Ether
Synthetic
Cleanser
Not Clean
OriginDerived from oleyl alcohol and ethylene oxide, both petroleum-derived chemical compounds. Synthesized through ethoxylation, where ethylene oxide chains are attached to oleyl alcohol molecules.
Poly(oxy-1,2-ethanediyl), .alpha.-9-(Z)-octadecenyl-.omega.-hydroxy (50 mol EO average molar ratio)
CAS #
9004-98-2
Form
Liquid
Skin Types
●all-skin-types
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.
Cleansing
Makes oil and water mix so dirt, makeup, and sunscreen can actually be washed away. The reason your face wash foams.
Removes Impurities
Cleansing Surfactant
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
3
CIR
Safe as used
Pregnancy
Yes
Concentration Guide
Leave-on1%
Rinse-off0.3–4%
0%50%100%
CIR reported use · 2010 survey
Regulatory Status
USA✔ permitted
EU⚠ restricted
JAPAN⚠ restricted
CANADA⚠ restricted
Verified Jun 2026
Data: CosIng · EWG · CIR