PEG-20 Sorbitan Triisostearate
AKA “Sorbitan Triisostearate PEG-20
Synthetic
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Ingredient Facts
Peg-20 sorbitan triisostearate
AKA: Sorbitan Triisostearate PEG-20
Synthetic · Surfactant - Emulsifying | Skin Conditioning · EWG: 4
Synthetic
Cleanser
Emulsifier
Skin Conditioner
Synthetic
Not Clean
Sorbitan, poly(oxy-1,2-ethanediyl) derivs. triisooctadecanoates, (20 mol EO average molar ratio) Science: Origin: Botanic/Natural | Process: Ethoxylation | Functions: Surfactant - Emulsifying Safety Ratings: CIR: Safe as used
CAS #
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Form
Liquid
Synthetic
Botanical. Derived from sorbitol (a sugar alcohol typically sourced from corn or glucose) and isostearic acid (a saturated fatty acid). Produced through esterification of sorbitan followed by ethoxylation with polyethylene glycol.
Function
Surfactant - Emulsifying | Skin Conditioning
Benefits
Surfactant Emulsifying
Moisturizing
Strengthens Barrier
Mixes oil and water
Traditional Use
A modern synthetic emulsifier developed in the mid-20th century by combining PEG with sorbitan and isostearic acid. Designed to improve the stability and texture of creams and lotions beyond what natural emulsifiers could achieve.
Skin Types
all-skin-types
Best For
Target
General
Melanin-Rich Skin
Suitable
Pregnancy Safe
Yes
EWG Score4
CIR Safety Findings
medical-approval, all-shades-safe, Not a Sensitizer
Regulatory Status
USApermitted
EUrestricted
JAPANrestricted
CANADArestricted
Verified Feb 2026
Data: CosIng · EWG · CIR