C40-60 Alkyl Stearate
AKA “Stearate Ester, Long-chain Stearate
Skin Conditioning
Ingredient Facts
C40-60 alkyl stearate
AKA: Stearate Ester, Long-chain Stearate
Skin Conditioning · Skin Conditioning · EWG: 4
Plant-Derived
Skin Conditioner
Plant Oil
Not Clean
C40-60-alkyl octadecanoate
CAS #
223239-93-8
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 very long-chain synthetic ester designed as a natural fat replacement in cosmetic formulations, offering improved thermal stability and consistency compared to animal and plant-derived waxes.
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