Polydecene
AKA “Decene polymer, Polydecene”
Synthetic
Ingredient Facts
Polydecene
AKA: Decene polymer
Synthetic · Emollient · EWG: 4
Synthetic
Emollient
Skin Conditioner
Synthetic
Clean
A lightweight conditioning agent that helps soften and smooth skin, leaving it feeling hydrated and comfortable.
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.
Emollient
Fills in the tiny cracks between skin cells to make everything feel smooth and soft. The "silky finish" ingredient.
Viscosity Controlling
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
Melanin-Rich Skin
Suitable
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 Feb 2026
Data: CosIng · EWG · CIR