Sorbitan Sesquistearate

Sorbitan Sesquistearate 1
AKA: Octadecanoate (2:3), 51938-44-4, Stearic acid, Sorbitan ester (3:2), NIKKOL SS-15V, SORBITAN SESQUISTEARATE [INCI]
Plant-Derived
Cleanser
Emulsifier
Clean
Sorbitan, octadecanoate (2:3)
Formula
C54H108O19
Mol. Weight
1061.40
CAS #
51938-44-4
Functions
Emulsifying
Forces oil and water to stay mixed instead of separating into layers. The unsung hero holding your lotion together.
Surfactant Emulsifying
Improves Elasticity
Moisturizing
Boosts Collagen
Mixes oil and water
Traditional Use
A synthetic emulsifier created from sorbitol and stearic acid. Developed for use in cosmetics to create stable oil-in-water or water-in-oil emulsions.
EWG
1
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
Skin Types
●all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
The paper trail
🔬Peer-reviewednone on file
⚖️Regulatory1 listing →
🛡️Safety-assessed4 reviews →
Counts, not a verdict. A listing isn't a study. The trail, you decide.
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR