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C16-36 Alkyl Stearate
AKA “Alkyl Stearate, Stearate Ester”
Skin Conditioning
Ingredient Facts
C16-36 alkyl stearate
AKA: Stearate Ester
Skin Conditioning · Skin Conditioning · EWG: 4
Plant-Derived
Skin Conditioner
Plant Oil
Not Clean
C16-36-alkyl octadecanoate
CAS #
223239-95-0
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.
Locks in moisture
Traditional Use
A synthetic long-chain fatty acid ester developed for cosmetics in the 20th century. Used as an emollient and thickening agent in creams and lotions.
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
USA✔ permitted
EU⚠ restricted
JAPAN⚠ restricted
CANADA⚠ restricted
Verified Jun 2026
Data: CosIng · EWG · CIR