Isosteareth-8

Isosteareth-8 molecular structure
molecular structure · PubChem
AKA: PEG-8 isostearyl ether, Polyoxyethylene isostearyl ether
Plant-Derived
Cleanser
Not Clean
OriginDerived from isostearic acid, a saturated fatty acid typically sourced from hydrogenated vegetable oils. Produced through ethoxylation of isostearyl alcohol, adding eight ethylene oxide units.
Isosteareth-8 is a cosmetic ingredient used as cleansing, surfactant - cleansing. Assessed as safe by the CIR.
CAS #
-
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-assessed1 review →
Counts, not a verdict. A listing isn't a study. The trail, you decide.
EWG
3
CIR
Safe as used
Pregnancy
Yes
Concentration Guide
CIR lists it as not reported to be in use.
CIR · report published 2012
Regulatory Status
USA✔ permitted
EU⚠ restricted
JAPAN⚠ restricted
CANADA⚠ restricted
Verified Jun 2026
Data: CosIng · EWG · CIR