Tristearin
AKA “555-43-1, Glycerol tristearate, Glyceryl tristearate, Trioctadecanoin, TRISTEAROYLGLYCEROL, Stearic triglyceride, Stearin, tri-, Spezialfett 118, Stearoyl triglyceride”
Skin Conditioning
Ingredient Facts
Tristearin
AKA: 555-43-1, Glycerol tristearate, Glyceryl tristearate, Trioctadecanoin, TRISTEAROYLGLYCEROL, Stearic triglyceride, Tri-, Spezialfett 118, Stearoyl triglyceride
Skin Conditioning · Skin Conditioning · EWG: 1
Plant-Derived
Skin Conditioner
Plant Oil
Clean
Tristearoylglycerol is a triglyceride that is glycerol in which all three hydroxy groups have been formally esterified with stearic acid. It has a role as a plant metabolite and a Caenorhabditis elegans metabolite. It is functionally related to an octadecanoic acid.
Solubility Insoluble in water. Soluble in chloroform, carbon disulfide
Formula
C57H110O6
Mol. Weight
891.50
CAS #
555-43-1
Form
Powder
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.
Viscosity Controlling
Locks in moisture
Traditional Use
A naturally occurring triglyceride found in animal fats and some plant oils, historically used in tallow candles and soap-making. Modern cosmetic use as an emollient represents a refinement of traditional fat-based skincare ingredients.
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
Caprylic/Capric/Myristic/Stearic Triglyceride
European Commission
EU Cosmetic Ingredient Database (CosIng)
Caprylic/Capric/Palmitic/Stearic Triglyceride
European Commission
EU Cosmetic Ingredient Database (CosIng)
Caprylic/Capric/Stearic Triglyceride
European Commission
EU Cosmetic Ingredient Database (CosIng)
Glyceryl Tri-Hydrogenated Rosinate
European Commission
EU Cosmetic Ingredient Database (CosIng)
Palmitic/Stearic Triglyceride
European Commission
EU Cosmetic Ingredient Database (CosIng)
Tri-C12-13 Alkyl Citrate
European Commission
EU Cosmetic Ingredient Database (CosIng)
Tri-C14-15 Alkyl Citrate
European Commission
EU Cosmetic Ingredient Database (CosIng)
Triisostearin
European Commission
EU Cosmetic Ingredient Database (CosIng)
Tristearin
European Commission
EU Cosmetic Ingredient Database (CosIng)
Caprylic/Capric/Myristic/Stearic Triglyceride
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
Caprylic/Capric/Stearic Triglyceride
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
Tri-C12-13 Alkyl Citrate
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
Tri-C14-15 Alkyl Citrate
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
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
Electrospun chitosan//ethylcellulose-vitamin E//ethylcellulose-curcumin tri-chamber eccentric Janus nanofibers for a joint antibacterial and antioxida
Zhang Z, Xia Y, Gong W, Zhou J, Yu DG et al.
International journal of biological macromolecules, 2024
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR