Isopropyl Ricinoleate

AKA: 71685-99-9, Isopropyl ricinolate, 9-Octadecenoic acid, 1-methylethyl ester, 12-Hydroxy-9-octadecenoic acid, 1-Methylethyl, 12-hydroxy-9-octadecenoate
Synthetic
Emollient
Skin Conditioner
Plant Oil
Not Clean
Isopropyl (R)-12-hydroxyoleate
Formula
C21H40O3
Mol. Weight
340.50
CAS #
71685-99-9
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
Traditional Use
Synthetic ester derived from castor oil, which has been used in traditional medicine across India, Africa, and the Middle East for thousands of years as a laxative, skin healer, and anti-inflammatory agent.
EWG
4
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
Not a Sensitizer
medical-approval
all-shades-safe
Regulatory Status
USApermitted
EUrestricted
JAPANrestricted
CANADArestricted
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