Dimethiconol

AKA: DIMETHYLSILANEDIOL, 1066-42-8, Silanediol, CHEBI:23816

Synthetic

Emollient

Skin Conditioner

Clean

Poly[oxy(dimethylsilylane)], .alpha.-hydro-.omega.-hydroxy-

Formula

C2H8O2Si

Mol. Weight

92.17

CAS #

31692-79-2, 70131-67-8

Form

Liquid

Functions

Antifoaming

Moisturising

Emollient

Fills in the tiny cracks between skin cells to make everything feel smooth and soft. The "silky finish" ingredient.

Locks In Moisture

Traditional Use

A silicone-based compound developed in the 20th century as a modern cosmetic ingredient. Created to provide improved conditioning, smoothness, and water-repellent properties in skincare and haircare formulations.

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-assessed3 reviews →

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

Verified Jun 2026

Data: PubChem · CosIng · EWG · CIR