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Tetradecyloctadecyl Stearate
AKA “2-Tetradecylstearyl stearate, UNII-VX3T5G31XA, VX3T5G31XA, Stearic acid, tetradecyloctadecyl ester, Tetradecyloctadecyl stearate [INCI], Octadecanoic acid, 2-tetradecyloctadecyl ester, 35325-35-0, RefChem:188542, (+-)-TETRADECYLOCTADECYL STEARATE”
Skin Conditioning
Ingredient Facts
Tetradecyloctadecyl stearate
AKA: 2-Tetradecylstearyl stearate, UNII-VX3T5G31XA, VX3T5G31XA, Stearic acid, Tetradecyloctadecyl ester, Tetradecyloctadecyl stearate [INCI], Octadecanoic acid, 2-tetradecyloctadecyl ester, 35325-35-0, RefChem:188542, (+-)-TETRADECYLOCTADECYL STEARATE
Skin Conditioning · Emulsion Stabilising · EWG: 4
Plant-Derived
Occlusive
Emulsifier
Skin Conditioner
Plant Oil
Not Clean
Stearic acid, tetradecyloctadecyl ester
Formula
C50H100O2
Mol. Weight
733.30
CAS #
35325-35-0
See origin →
Functions
Binding
Emulsion Stabilising
Forces oil and water to stay mixed instead of separating into layers. The unsung hero holding your lotion together.
Film Forming
Creates a physical seal on skin to lock moisture in and keep irritants out. The "slugging" ingredient — barrier protection.
Opacifying
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
Long-chain synthetic ester formulated in modern cosmetics as an emollient and conditioning agent. Developed to provide luxurious texture and skin-conditioning properties without traditional use.
Skin Types
●all-skin-types
Best For
Dryness
Pregnancy & Breastfeeding Safe
Yes
EWG
4
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
Not a Sensitizer
medical-approval
all-shades-safe
Regulatory Status
USA✔ permitted
EU⚠ restricted
JAPAN⚠ restricted
CANADA⚠ restricted
Brightening Bubbling Cleanser
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Amended Final Report on the Safety Assessment of Hydroxystearic Acid
Cosmetic Ingredient Review (CIR) Expert Panel
International Journal of Toxicology
→
Final Report on the Safety Assessment of Isostearic Acid
Cosmetic Ingredient Review (CIR) Expert Panel
International Journal of Toxicology
→
Final Report on the Safety Assessment of Oleic Acid, Lauric Acid, Palmitic Acid, Myristic Acid, and Stearic Acid
Cosmetic Ingredient Review (CIR) Expert Panel
International Journal of Toxicology
→
Final Report: Safety Assessment of Polyhydroxystearic Acid, Poly(3-Hydroxyoctanoic Acid, and Polylactic Acid as Used in Cosmetics
Cosmetic Ingredient Review (CIR) Expert Panel
International Journal of Toxicology
→
Re-evaluation: Safety Assessment of Hydroxystearic Acid as Used in Cosmetics
Cosmetic Ingredient Review (CIR) Expert Panel
International Journal of Toxicology
→
10-Hydroxystearic Acid
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Polyhydroxystearic Acid
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Stearic Acid
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Tetradecyloctadecyl Stearate
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Hydroxystearic Acid
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
→
Isostearic Acid
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
→
Polyhydroxystearic Acid
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
→
Stearic Acid
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
→
Simultaneous contact sensitivity to hydroxystearic acid and C18-36 acid triglyceride in lip glosses.
Kimura M, Kawada A, Ogino M, Murayama Y
Contact dermatitis, 2002
→
Microemulsions based on TPGS and isostearic acid for imiquimod formulation and skin delivery.
Pescina S, Garrastazu G, Del Favero E, Rondelli V, Cantù L et al.
European journal of pharmaceutical sciences : official journal of the European Federation for Pharmaceutical Sciences, 2018
→
Bio-derived hydroxystearic acid ameliorates skin age spots and conspicuous pores.
Schütz R, Rawlings AV, Wandeler E, Jackson E, Trevisan S et al.
International journal of cosmetic science, 2019
→
Bio-derived hydroxystearic acid ameliorates skin age spots and conspicuous pores.
Schütz R, Rawlings AV, Wandeler E, Jackson E, Trevisan S et al.
International journal of cosmetic science, 2019
→
Bio-derived hydroxystearic acid ameliorates skin age spots and conspicuous pores.
Schütz R, Rawlings AV, Wandeler E, Jackson E, Trevisan S et al.
International journal of cosmetic science, 2019
→
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR