Styrene/Stearyl Methacrylate Crosspolymer

Styrene/Stearyl Methacrylate Crosspolymer molecular structure
molecular structure · PubChem
AKA: Styrene-Stearyl Methacrylate Crosspolymer
Plant-Derived
Skin Conditioner
Clean
OriginDerived from styrene and stearyl methacrylate, both synthetic monomers from petrochemical sources. Synthesized through free-radical crosspolymerization of the two monomers to form a networked polymer.
2-Propenoic Acid, 2-Methyl-, Octadecyl Ester, Polymer wtih Divinylbenzene and Ethenylbenzene
CAS #
91838-84-5
Form
Liquid
Skin Types
●all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
Functions
Absorbent
Skin Conditioning
A catch-all term for ingredients that improve how skin looks and feels — softer, smoother, more supple. The workhorse behind most moisturizers.
Locks in moisture
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
1
CIR
Safe as used
Pregnancy
Yes
Concentration Guide
CIR lists it as not reported to be in use.
CIR · report published 2014
Regulatory Status
USA✔ permitted
EU⚠ restricted
JAPAN⚠ restricted
CANADA⚠ restricted
Verified Jun 2026
Data: CosIng · EWG · CIR