Polydecene

AKA: Decene polymer

Synthetic

Skin Conditioner

Clean

OriginPolydecene is derived from petroleum-based hydrocarbons within the alkene polymer chemical family. It is synthesized through polymerization of decene monomers using catalytic processes.

Homopolymer of decene

CAS #

37309-58-3, 25189-70-2

Form

Oil

Skin Types

●all-skin-types

Best For

Dryness

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-reviewed1 paper →

⚖️Regulatory1 listing →

🛡️Safety-assessed2 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-on0.098–47.9%

Rinse-off25%

0%50%100%

CIR reported use · report published 2020

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