Glyceryl Stearate/Acetate
AKA “Acetostearin, Acetomonostearin, Stearin, Glycerol monoacetate monostearate, 3-Propanetriol monoacetate monoctadecanoate”
Emollient
Ingredient Facts
Glyceryl stearate/acetate
AKA: Acetostearin, Acetomonostearin, Stearin, Glycerol monoacetate monostearate, 3-Propanetriol monoacetate monoctadecanoate
Emollient · Emollient · EWG: 4
Plant-Derived
Emollient
Skin Conditioner
Not Clean
Octadecanoic acid, monoester with 1,2,3-propanetriol monoacetate
Formula
C23H44O5
Mol. Weight
400.6
CAS #
27177-85-1
Form
Liquid
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.
Locks In Moisture
Traditional Use
A modern synthetic ingredient combining glycerin, stearic acid, and acetic acid esters. Developed for cosmetic use as an emollient and emulsifying agent.
Skin Types
●all-skin-types
Best For
Dryness
Pregnancy & Breastfeeding Safe
Yes
Development, characterization, molecular docking, and in vivo skin penetration of coenzyme Q10 nanostructured lipid carriers using tristearin and stea
Aryani NLD, Siswodihardjo S, Soeratri W, Sari NFI
Journal of basic and clinical physiology and pharmacology, 2021
Final Report on the Safety Assessment of Trihydroxystearin
Cosmetic Ingredient Review (CIR) Expert Panel
International Journal of Toxicology
Final Report on the Safety Assessment of Trilaurin, Triarachidin, Tribehenin, Tricaprin, Tricaprylin, Trierucin, Triheptanoin, Triheptylundecanoin, Triisononanoin, Triisopalmitin, Triisostearin, Trili
Cosmetic Ingredient Review (CIR) Expert Panel
International Journal of Toxicology
Rereview not opened: Glyceryl Isostearates and Glyceryl Stearate/Acetate
Cosmetic Ingredient Review (CIR) Expert Panel
International Journal of Toxicology
Glyceryl Stearate/Acetate
European Commission
EU Cosmetic Ingredient Database (CosIng)
Triisostearin
European Commission
EU Cosmetic Ingredient Database (CosIng)
Tristearin
European Commission
EU Cosmetic Ingredient Database (CosIng)
Trihydroxystearin
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
Triisostearin
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
Tristearin
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
Regioisomerism of triacylglycerols in lard, tallow, yolk, chicken skin, palm oil, palm olein, palm stearin, and a transesterified blend of palm steari
Kallio H, Yli-Jokipii K, Kurvinen JP, Sjövall O, Tahvonen R
Journal of agricultural and food chemistry, 2001
Regioisomerism of triacylglycerols in lard, tallow, yolk, chicken skin, palm oil, palm olein, palm stearin, and a transesterified blend of palm steari
Kallio H, Yli-Jokipii K, Kurvinen JP, Sjövall O, Tahvonen R
Journal of agricultural and food chemistry, 2001
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR