Sorbitan Sesquiisostearate

Sorbitan Sesquiisostearate 1
photograph
AKA: Sorbitol Sesquiisostearate
Plant-Derived
Cleanser
Emulsifier
Clean
OriginDerived from sorbitol, a sugar alcohol typically obtained from corn syrup or other plant carbohydrates. Produced through esterification of sorbitol with isostearic acid, creating a mixed ester surfactant.
Sorbitan, isooctadecanoate (2:3)
CAS #
71812-38-9
Form
Wax
Skin Types
●all-skin-types, gentle
Best For
General
Pregnancy & Breastfeeding Safe
Yes
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
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.
EWG
1
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
Eye Irritant in Testing
1 study / 1 irritating / reactions minimal (CIR 305)
Mixed Skin Irritation Results
4 studies / 1 irritating / 1 mixed / 2 not irritating / reactions weak (CIR 305 and 682)
Concentration Guide
Leave-on0.005–3%
Rinse-off1%
0%50%100%
CIR reported use · 2014 survey
Regulatory Status
USA✔ permitted
EU⚠ restricted
JAPAN⚠ restricted
CANADA⚠ restricted
Verified Jun 2026
Data: CosIng · EWG · CIR