Hydroxyoctacosanyl Hydroxystearate

Hydroxyoctacosanyl Hydroxystearate molecular structure
molecular structure · PubChem
AKA: 2-Hydroxyoctacosyl 12-hydroxyoctadecanoate, 93840-71-2, ELFACOS C 26, Octadecanoic acid, 2-hydroxyoctacosyl ester, 2-HYDROXYOCTACOSYL 12-HYDROXYSTEARATE, AEC HYDROXYOCTACOSANYL HYDROXYSTEARATE
Plant-Derived
Emollient
Skin Conditioner
Clean
2-Hydroxyoctacosyl 12-hydroxyoctadecanoate
Effective at 7.78%
Formula
C46H92O4
Mol. Weight
709.20
CAS #
93840-71-2
Form
Liquid
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
EWG
1
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
Not a Sensitizer
medical-approval
all-shades-safe
Concentration Guide
0.05%
15.5%
0%22%
Reported use
CIR reported use: 0.5-13 | 0.05-15.5
Regulatory Status
USA✔ permitted
EU⚠ restricted
JAPAN⚠ restricted
CANADA⚠ restricted
Skin Types
●all-skin-types
Best For
Dryness
Pregnancy & Breastfeeding Safe
Yes
The paper trail
🔬Peer-reviewednone on file
⚖️Regulatory1 listing →
🛡️Safety-assessed3 reviews →
Counts, not a verdict. A listing isn't a study. The trail, you decide.
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR