C4-6 Olefin/Styrene Copolymer
molecular structure · PubChem
AKA: Plastic Polymer
Synthetic
Skin Conditioner
Not Clean
OriginDerived from the chemical families of C4-6 olefins (butene, pentene, hexene) and styrene (ethenylbenzene). Synthesized through free radical polymerization or catalytic copolymerization of styrene with C4-6 olefinic monomers.
Ethenylbenzene copolymer with C4-6 olefins
Form
Liquid
State
Solid
Skin Types
●all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
Functions
Depilatory
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-assessed1 review →
Counts, not a verdict. A listing isn't a study. The trail, you decide.
EWG
4
CIR
Safe as used
Pregnancy
Yes
Restricted By
Concentration Guide
CIR lists it as not reported to be in use.
CIR · report published 2014
Regulatory Agencies
Verified Jun 2026
Data: CosIng · EWG · CIR
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