Polydecene
AKA “Decene polymer, Polydecene”
Skin Conditioning
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Ingredient Facts
Polydecene
AKA: Decene polymer
Skin Conditioning · Skin Conditioning · EWG: 1
Synthetic
Skin Conditioner
Clean
Homopolymer of decene
CAS #
37309-58-3, 25189-70-2
Form
Oil
See origin →
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
Traditional Use
A synthetic hydrocarbon polymer created in the mid-20th century. Used in cosmetics as an emollient and texture modifier to provide slip and spreadability in creams, oils, and makeup formulations.
Skin Types
●all-skin-types
Best For
Dryness
Pregnancy & Breastfeeding Safe
Yes
Hydrogenated Polydecene
European Commission
EU Cosmetic Ingredient Database (CosIng)
Polydecene
European Commission
EU Cosmetic Ingredient Database (CosIng)
Hydrogenated Polydecene
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
Polydecene
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
Verified Jun 2026
Data: CosIng · EWG · CIR