Dimethiconol/Stearyl Methicone/Phenyl Trimethicone Copolymer

AKA: Silicone Copolymer

Plant-Derived

Skin Conditioner

Not Clean

Polymer formed from poly[oxy(methylstearyl)silylene, .alpha.-trimethylsilyloxy, .omega.-trimethylsilyl, poly[oxy(phenyl-trimethylsilyloxy)silylene,.alpha.-trimethylsilyloxy,.omega.-trimethylsilyl, and poly[oxy(dimethylsilylene),.alpha.-hydro,.omega.-hydro

Form

Liquid

Functions

Light Stabilizer

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

Shields from UV damage

Traditional Use

A specialized silicone copolymer created in the late 20th century to combine conditioning, water-proofing, and sensory benefits in premium cosmetic formulations, particularly in color cosmetics and hair care.

EWG

CIR

Safe as used

Pregnancy

Yes

CIR Safety Findings

Not a Sensitizer

medical-approval

all-shades-safe

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

Dryness

Pregnancy & Breastfeeding Safe

Yes

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.

Verified Jun 2026

Data: CosIng · EWG · CIR