AKA: Lanol 189, Isononanoic acid, Isooctadecyl ester, 163564-45-2, Hexanoic acid, ISOSTEARYL ISONONANOATE [INCI]
WHAT IS IT? Plant-Derived
Emollient
Skin Conditioner
Hair Care
Clean
Origin Derived from isostearic acid and isononanoic acid, which are synthetic branched-chain carboxylic acids. Produced through esterification, combining the two acids via acid-catalyzed condensation reaction.
Hexanoic acid, 3,5,5-trimethyl-, isooctadecyl ester
IS IT FOR ME? Pregnancy & Breastfeeding Safe
Yes
WHAT’S IT DO? Functions
Hair 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.
CAN I TRUST THIS? The paper trail
🔬 Peer-reviewed none on file
🛡️ Safety-assessed 3 reviews →
Counts, not a verdict. A listing isn't a study. The trail, you decide.
IS IT CLEAN? Concentration Guide
CIR's newest survey reports no concentration of use.
CIR · 2012 survey
Regulatory Status
JAPAN ⚠ restricted
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR
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