Stearyl HDI/PEG-50 Copolymer

AKA: Film-forming polymer, Stearyl polyol copolymer

Plant-Derived

Occlusive

Not Clean

OriginDerived from stearyl alcohol and hexamethylene diisocyanate (HDI), combined with polyethylene glycol polymers. Synthesized through polymerization and condensation reactions linking the stearyl and HDI components with PEG chains.

Stearyl HDI/PEG-50 Copolymer is a copolymer of 1,6-hexanediisocyanate, PEG-50 and octadecanol monomers

CAS #

-

Form

Liquid

Skin Types

●all-skin-types

Best For

General

Pregnancy & Breastfeeding Safe

Yes

Functions

Film Forming

Creates a physical seal on skin to lock moisture in and keep irritants out. The "slugging" ingredient — barrier protection.

Creates Protective Barrier

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

CIR

Safe as used

Pregnancy

Yes

Restricted By

Credo Beauty Whole Foods Premium Body Care Beauty Heroes MADE SAFE EWG VERIFIED

Concentration Guide

CIR lists it as not reported to be in use.

CIR · report published 2016

Regulatory Status

USA✔ permitted

EU⚠ restricted

JAPAN⚠ restricted

CANADA⚠ restricted

Regulatory Agencies

EWG CIR FDA EU COSING Health Canada

Verified Jun 2026

Data: CosIng · EWG · CIR