Cetyl Ricinoleate
AKA “10401-55-5, Ricinoleic acid, hexadecyl ester, UNII-1P677500YD, JEECHEM CER, TEGOSOFT CR, CETINOL R, EINECS 233-864-4, 1P677500YD, AEC CETYL RICINOLEATE”
Emollient
Ingredient Facts
Cetyl ricinoleate
AKA: 10401-55-5, Ricinoleic acid, Hexadecyl ester, UNII-1P677500YD, JEECHEM CER, TEGOSOFT CR, CETINOL R, EINECS 233-864-4, 1P677500YD, AEC CETYL RICINOLEATE
Emollient · Emollient · EWG: 1
Synthetic
Emollient
Skin Conditioner
Plant Oil
Clean
9-Octadecenoic acid, 12-hydroxy-, hexadecyl ester [R-(Z)]-
Effective at 8.0%
Formula
C34H66O3
Mol. Weight
522.90
CAS #
10401-55-5
Form
Liquid
See origin →
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
A naturally-derived emollient created by esterifying cetyl alcohol with ricinoleic acid from castor oil. Developed in the 20th century as an alternative to pure plant oils for more stable cosmetic formulations.
Skin Types
●all-skin-types, gentle
Best For
Dryness
Pregnancy & Breastfeeding Safe
Yes
EWG
1
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
Not a Sensitizer
ewg-1
medical-approval
pregnancy-nursing-safe
all-shades-safe
Concentration Guide
0.002%
16.0%
0%22%
Effective Range
CIR reported use: 0.002-11 | 0.01-11 | 0.3-16 | 0.1-10
Regulatory Agencies
Final Report on the Safety Assessment of Ricinus Communis (Castor) Seed Oil, Hydrogenated Castor Oil, Glyceryl Ricinoleate, Glyceryl Ricinoleate SE, Ricinoleic Acid, Potassium Ricinoleate, Sodium Rici
Cosmetic Ingredient Review (CIR) Expert Panel
International Journal of Toxicology
Cetyl Ricinoleate
European Commission
EU Cosmetic Ingredient Database (CosIng)
Glyceryl Triacetyl Ricinoleate
European Commission
EU Cosmetic Ingredient Database (CosIng)
Ricinoleic Acid
European Commission
EU Cosmetic Ingredient Database (CosIng)
Cetyl Ricinoleate
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
Glyceryl Triacetyl Ricinoleate
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
Ricinoleic Acid
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
Differentiation of Malassezia species: selectivity of cremophor EL, castor oil and ricinoleic acid for M. furfur.
Mayser P, Haze P, Papavassilis C, Pickel M, Gruender K et al.
The British journal of dermatology, 1997
Differentiation of Malassezia species: selectivity of cremophor EL, castor oil and ricinoleic acid for M. furfur.
Mayser P, Haze P, Papavassilis C, Pickel M, Gruender K et al.
The British journal of dermatology, 1997
Differentiation of Malassezia species: selectivity of cremophor EL, castor oil and ricinoleic acid for M. furfur.
Mayser P, Haze P, Papavassilis C, Pickel M, Gruender K et al.
The British journal of dermatology, 1997
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR