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Stearyl Linoleate
AKA “17673-53-9, UNII-6762ZSK8IM, 6762ZSK8IM, octadecyl 9Z, 12Z-octadecadienoate, octadecanyl 9Z, EINECS 241-653-3, WE(18:0/18:2(9Z, 12Z)), LINOLEIC ACID, OCTADECYL ESTER, 9, 12-OCTADECADIENOIC ACID (9Z, 12Z)-”
Emollient
Ingredient Facts
Stearyl linoleate
AKA: 17673-53-9, UNII-6762ZSK8IM, 6762ZSK8IM, Octadecyl 9Z, 12Z-octadecadienoate, Octadecanyl 9Z, EINECS 241-653-3, WE(18:0/18:2(9Z, 12Z)), LINOLEIC ACID, OCTADECYL ESTER, 9, 12-OCTADECADIENOIC ACID (9Z, 12Z)-
Emollient · Emollient · EWG: 4
Plant-Derived
Emollient
Skin Conditioner
Plant Oil
Not Clean
Octadecyl (9Z,12Z)-octadeca-9,12-dienoate
Formula
C36H68O2
Mol. Weight
532.90
CAS #
17673-53-9
Form
Liquid
See origin →
Functions
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.
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
Created as an ester combining stearyl alcohol with linoleic acid (an omega-6 essential fatty acid). Developed to provide skin conditioning and barrier support benefits in contemporary skincare.
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
Dilinoleic Acid/Butanediol Copolymer
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Isomerized Linoleic Acid
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Isostearyl Linoleate
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
PEG-8 Dimethicone/Dimer Dilinoleic Acid Copolymer
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Stearyl Linoleate
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Trilinoleic Acid
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Dilinoleic Acid
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
→
Dilinoleic Acid/Butanediol Copolymer
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
→
Isomerized Linoleic Acid
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
→
Isostearyl Linoleate
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
→
Linoleic Acid
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
→
Efficacy of an emollient containing diethylene glycol/dilinoleic acid copolymer for the treatment of dry skin and pruritus in patients with senile xer
Izumi R, Negi O, Suzuki T, Tominaga M, Kamo A et al.
Journal of cosmetic dermatology, 2017
→
Linoleic Acid Induced Changes in SZ95 Sebocytes-Compariso...
Dóra Kovács, Emanuela Camera, Szilárd Póliska, Alessia Cavallo, Miriam Maiellaro, Katalin Dull + 4 more
Nutrients, 2023
→
Effect of a combination of medium chain triglycerides, linoleic acid, soy lecithin and vitamins A and E on wound healing in rats.
Magalhães MS, Fechine FV, Macedo RN, Monteiro DL, Oliveira CC et al.
Acta cirurgica brasileira, 2008
→
Fatty acid composition and productive traits of broiler fed diets containing conjugated linoleic acid.
Sirri F, Tallarico N, Meluzzi A, Franchini A
Poultry science, 2003
→
The Role of Linoleic Acid in Skin and Hair Health: A Review.
Xi Wang, Yan Jia, Huaming He
International journal of molecular sciences, 2024
→
The Role of Linoleic Acid in Skin and Hair Health: A Review.
Xi Wang, Yan Jia, Huaming He
International journal of molecular sciences, 2024
→
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR