Stearyl Methacrylate/Perfluorooctylethyl Methacrylate Copolymer

AKA: Fluorinated polymer, Film-forming copolymer

Plant-Derived

Occlusive

Plant Oil

Not Clean

Stearyl Methacrylate/Perfluorooctylethyl Methacrylate Copolymer is a Copolymer of Stearyl Methacrylate and Perfluorooctylethyl Methacrylate monomers

CAS #

92-44-4

Form

Liquid

Functions

Film Forming

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

Viscosity Controlling

Creates Protective Barrier

Controls Viscosity

Creates protective layer

Controls product thickness

Traditional Use

Synthesized in late 20th century as a specialized polymer combining stearyl methacrylate with fluorinated monomers. Created for advanced skincare and cosmetic formulations requiring water and stain resistance properties.

EWG

CIR

Safe as used

Pregnancy

Caution

Restricted By

Credo Beauty Sephora Clean at Sephora Target Clean Ulta Conscious Beauty MADE SAFE EWG VERIFIED

CIR Safety Findings

medical-approval

all-shades-safe

Potential Sensitizer

Regulatory Status

USA✔ permitted

EU⚠ restricted

JAPAN⚠ restricted

CANADA⚠ restricted

Regulatory Agencies

EWG CIR FDA EU COSING Health Canada

Skin Types

●all-skin-types

Best For

General

Pregnancy & Breastfeeding Safe

Caution

The paper trail

🔬Peer-reviewednone on file

⚖️Regulatory1 listing →

🛡️Safety-assessed2 reviews →

Counts, not a verdict. A listing isn't a study. The trail, you decide.

Verified Jun 2026

Data: CosIng · EWG · CIR