Myristyl Isostearate

Myristyl Isostearate 1
molecular structure · PubChem CID 17751165
AKA: Tetradecyl isooctadecanoate, AEC MYRISTYL ISOSTEARATE, Isooctadecanoic acid, Tetradecyl ester
Plant-Derived
Emollient
Skin Conditioner
Not Clean
OriginDerived from myristic acid (typically from coconut or palm oil) and isostearyl alcohol, both saturated fatty derivatives. Produced through esterification, combining myristic acid with isostearyl alcohol using catalytic processes.
The CIR Expert Panel concluded that the alkyl esters, listed subsequently, are safe in the present practices of use and concentration described in this safety assessment when formulated to be non-irritating.
Formula
C32H64O2
Mol. Weight
480.80
CAS #
94247-26-4
Form
Liquid
Skin Types
●all-skin-types
Best For
Dryness
Pregnancy & Breastfeeding Safe
Yes
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
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
CIR lists it as not reported to be in use.
CIR · report published 2015
Regulatory Status
USA✔ permitted
CANADA✔ permitted
Regulatory Agencies
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR