PEG-20 Sorbitan Triisostearate
AKA “Sorbitan Triisostearate PEG-20
Surfactant
Ingredient Facts
Peg-20 sorbitan triisostearate
AKA: Sorbitan Triisostearate PEG-20
Surfactant · Emulsifying · EWG: 4
Plant-Derived
Cleanser
Emulsifier
Not Clean
Sorbitan, poly(oxy-1,2-ethanediyl) derivs. triisooctadecanoates, (20 mol EO average molar ratio)
CAS #
-
Form
Liquid
See origin →
Functions
Emulsifying
Forces oil and water to stay mixed instead of separating into layers. The unsung hero holding your lotion together.
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
General
Pregnancy & Breastfeeding Safe
Yes
EWG
4
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
Not a Sensitizer
medical-approval
all-shades-safe
Regulatory Status
USApermitted
EUrestricted
JAPANrestricted
CANADArestricted
Verified Jun 2026
Data: CosIng · EWG · CIR