PEG-90 Stearate

AKA: Ethylene glycol monostearate, Glycol stearate, 111-60-4, 2-Hydroxyethyl octadecanoate, Monthybase, Monthyle, Parastarin, Ivorit, Sedetol, Glycol monostearate
Plant-Derived
Cleanser
Not Clean
OriginDerived from stearic acid, typically sourced from animal fats or vegetable oils through hydrogenation. Synthesized through ethoxylation of stearic acid with polyethylene glycol, creating a nonionic surfactant.
Poly(oxy-1,2-ethanediyl), .alpha.-(1-oxooctadecyl)-.omega.-hydroxy- (90 mol EO average molar ratio)
Solubility POLYETHYLENE GLYCOL ESTERS AND ETHERS INCR THE WATER SOLUBILITY OF TYROTHRICIN.
Formula
C20H40O3
Mol. Weight
328.50
CAS #
9004-99-3
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 Surfactant
Removes Impurities
The paper trail
🔬Peer-reviewed1 paper →
⚖️Regulatory1 listing →
🛡️Safety-assessed1 review →
Counts, not a verdict. A listing isn't a study. The trail, you decide.
EWG
4
CIR
Safe as used
Pregnancy
Yes
Concentration Guide
CIR's newest survey reports no concentration of use.
CIR · 2023 survey
Regulatory Status
USA✔ permitted
EU⚠ restricted
JAPAN⚠ restricted
CANADA⚠ restricted
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR