Sorbitan Sesquioleate
molecular structure · PubChem
AKA: Arlacel C, Sorgen 30, Span 83, Protachem SOC, Glycomul SOC, Liposorb SQ0, Hodag SSO, Montane 83, Emasol 41S
Synthetic
Emollient
Skin Conditioner
Plant Oil
Synthetic
Clean
Sorbitan Sesquioleate is a cosmetic ingredient. Also known as Arlacel C. Rated low hazard by EWG.
Effective at 5.0%
Formula
C66H130O18
Mol. Weight
1211.70
CAS #
8007-43-0
Form
Liquid
State
Other Solid; Liquid
Functions
Emollient
Fills in the tiny cracks between skin cells to make everything feel smooth and soft. The "silky finish" ingredient.
Skin Conditioning
A catch-all term for ingredients that improve how skin looks and feels — softer, smoother, more supple. The workhorse behind most moisturizers.
Emulsifier
Mixes Oil & Water
Traditional Use
A trademarked sorbitan emulsifier developed by Croda in the mid-20th century. Created to provide stable emulsification in cosmetic creams and lotions as a replacement for traditional soap-based emulsifiers.
EWG
1
CIR
Safe w/Qualifications
Pregnancy
Yes
CIR Safety Findings
Not a Sensitizer
all-shades-safe
Concentration Guide
0.005%
10.0%
0%14%
Reported use
CIR reported use: 0.005-3 | 0.005-8 | 0.1-10
Regulatory Agencies
Skin Types
●all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
The paper trail
🔬Peer-reviewednone on file
⚖️Regulatory0 listings
🛡️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