Propanediol Diisostearate
AKA “Propanediol Isostearate Ester”
Emollient
Ingredient Facts
Propanediol diisostearate
AKA: Propanediol Isostearate Ester
Emollient · Emollient · EWG: 4
Plant-Derived
Emollient
Skin Conditioner
Plant Oil
Not Clean
Propanediol Diisostearate is a cosmetic ingredient used as skin conditioning - emollient. Assessed as safe by the CIR.
CAS #
-
Form
Liquid
See origin →
Functions
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
Developed in the late 20th century as a synthetic ester. Created as an emollient for cosmetic formulations to provide a silky, non-greasy feel.
Skin Types
●all-skin-types
Best For
Dryness
Pregnancy & Breastfeeding Safe
Yes
Verified Jun 2026
Data: CosIng · EWG · CIR