Cetearyl Methicone

AKA: Cetearyl Silicone, Cetyl Stearyl Methicone

Plant-Derived

Skin Conditioner

Clean

OriginDerived from silicone polymers, specifically a hybrid of cetearyl alcohol and dimethicone compounds. Synthesized through hydrosilylation reactions that bond silicone chains to fatty alcohol backbones.

Poly{oxy[(C16-18)-alkylmethylsilylene]}, trimethylsilyl terminated

CAS #

227200-32-0

Form

Liquid

Skin Types

●all-skin-types, gentle

Best For

General

Pregnancy & Breastfeeding Safe

Yes

Functions

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-assessed4 reviews →

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

EWG

CIR

Safe as used

Pregnancy

Yes

Concentration Guide

Leave-on0.75–1.1%

Rinse-offNot reported

0%50%100%

CIR reported use · 2019 survey

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