Hydrogenated Castor Oil Stearyl Esters
AKA “Hydrogenated Castor Oil Ester
Carrier Oil
Ingredient Facts
Hydrogenated castor oil stearyl esters
AKA: Hydrogenated Castor Oil Ester
Carrier Oil · Emulsion Stabilising · EWG: 4
Plant-Derived
Emulsifier
Skin Conditioner
Hair Care
Plant Oil
Not Clean
Hydrogenated Castor Oil Stearyl Esters is the hydrogenation product of the esters formed by the reaction of castor oil and stearyl alcohol
Family
Euphorbiaceae (Spurge family)
Plant Part
Seed
CAS #
736150-63-3
Form
Oil
See origin →
Functions
Emulsion Stabilising
Forces oil and water to stay mixed instead of separating into layers. The unsung hero holding your lotion together.
Hair Conditioning
A catch-all term for ingredients that improve how skin looks and feels — softer, smoother, more supple. The workhorse behind most moisturizers.
Skin Conditioning
A catch-all term for ingredients that improve how skin looks and feels — softer, smoother, more supple. The workhorse behind most moisturizers.
Locks in moisture
Traditional Use
Castor oil has been used traditionally in Ayurvedic and Egyptian medicine for skin and hair. This ingredient is a modern chemical derivative created by esterifying hydrogenated castor oil with stearyl alcohol for use as a thickening and conditioning agent.
Skin Types
all-skin-types
Best For
Dryness
Pregnancy & Breastfeeding Safe
Yes
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
Verified Jun 2026
Data: CosIng · EWG · CIR