PEG-40 Sorbitan Perisostearate
AKA “PEG sorbitan perisostearate
Surfactant
Ingredient Facts
Peg-40 sorbitan perisostearate
AKA: PEG sorbitan perisostearate
Surfactant · Cleansing · EWG: 3
Plant-Derived
Cleanser
Emulsifier
Not Clean
1,4-Anhydro-D-glucitol, ethoxylated, isooctadecanoates (1:4) (40 mol EO average molar ratio)
CAS #
9005-64-5
Form
Liquid
See origin →
Functions
Cleansing
Makes oil and water mix so dirt, makeup, and sunscreen can actually be washed away. The reason your face wash foams.
Emulsifying
Forces oil and water to stay mixed instead of separating into layers. The unsung hero holding your lotion together.
Cleansing Surfactant
Emulsifier
Antioxidant Protection
Wound Healing
Removes Impurities
Mixes Oil & Water
Traditional Use
Developed as a modern synthetic emulsifier combining sorbitan, polyethylene glycol, and isostearic acid esters. Formulated to provide enhanced emulsification and conditioning properties in cosmetic products.
Skin Types
all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
EWG
3
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
Not a Sensitizer
medical-approval
all-shades-safe
Regulatory Status
USApermitted
CANADApermitted
Regulatory Agencies
Verified Jun 2026
Data: CosIng · EWG · CIR