Sorbeth-3 Isostearate
molecular structure · PubChem
AKA: Sorbitan Polysorbate Ester
Plant-Derived
Cleanser
Emulsifier
Not Clean
1,4-Anhydro-D-glucitol, poly(oxy-1,2-ethanediyl) derivatives, monoesters with isooctadecanoic acid (3 mol EO average molar ratio)
Effective at 0.7%
Functions
Emulsifying
Forces oil and water to stay mixed instead of separating into layers. The unsung hero holding your lotion together.
Emulsifier
Mixes Oil & Water
Traditional Use
Developed as a light-duty emulsifier in modern cosmetic chemistry. Used in serums and light creams to blend oils without heaviness.
EWG
4
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
Not a Sensitizer
medical-approval
all-shades-safe
Concentration Guide
0.5%
0.9%
0%1%
Reported use
CIR reported use: 0.5-0.9
Regulatory Agencies
Skin Types
●all-skin-types
Best For
Dryness
Pregnancy & Breastfeeding Safe
Yes
The paper trail
🔬Peer-reviewednone on file
⚖️Regulatory1 listing →
🛡️Safety-assessed2 reviews →
Counts, not a verdict. A listing isn't a study. The trail, you decide.
Verified Jun 2026
Data: CosIng · EWG · CIR