Oleyl Linoleate

AKA: 17673-59-5, 9Z-octadecenyl 9Z, 12Z-octadecadienoate, LINOLEIC ACID, OLEYL ESTER, WE(18:1(9Z)/18:2(9Z, 12Z)), (9Z)-9-octadecenyl ester, 9-OCTADECEN-1-OL
Synthetic
Emollient
Skin Conditioner
Not Clean
OriginDerived from oleyl alcohol and linoleic acid, both obtained from plant oils through chemical processing. Synthesized through esterification, combining oleyl alcohol with linoleic acid under catalytic conditions.
9-(Z)-Octadecenyl esters (9Z,12Z)-octadeca-9,12-dienoate
Formula
C36H66O2
Mol. Weight
530.90
CAS #
17673-59-5
Form
Liquid
Skin Types
●all-skin-types
Best For
Dryness
Pregnancy & Breastfeeding Safe
Yes
Functions
Emollient
Fills in the tiny cracks between skin cells to make everything feel smooth and soft. The "silky finish" ingredient.
Locks In Moisture
The paper trail
🔬Peer-reviewed1 paper →
⚖️Regulatory1 listing →
🛡️Safety-assessed1 review →
Counts, not a verdict. A listing isn't a study. The trail, you decide.
EWG
4
CIR
Safe as used
Pregnancy
Yes
Concentration Guide
Leave-on10–11%
Rinse-off10%
0%50%100%
CIR reported use · 2012 survey
Regulatory Status
USA✔ permitted
EU⚠ restricted
JAPAN⚠ restricted
CANADA⚠ restricted
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR