PEG-175 Distearate
AKA “Ethane-1, 2-diol;heptadecanoic acid, ethylene glycol;heptadecanoic acid, QYJQHDWGURXGNL-UHFFFAOYSA-N, C19H40O4, Protamate 200-DS(TM), PEG-4 Distearate(TM)”
Synthetic
Ingredient Facts
Peg-175 distearate
AKA: Ethane-1, 2-diol;heptadecanoic acid, Ethylene glycol;heptadecanoic acid, QYJQHDWGURXGNL-UHFFFAOYSA-N, C19H40O4, Protamate 200-DS(TM), PEG-4 Distearate(TM)
Synthetic · Cleansing · EWG: 4
Plant-Derived Synthetic
Cleanser
Emulsifier
Synthetic
Not Clean
Gently cleanses skin and hair while helping blend oil and water ingredients together. Creates a smooth, luxurious texture in the formula.
Formula
C19H40O4
Mol. Weight
332.50
CAS #
9005-08-7
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.
Viscosity Controlling
Cleansing Surfactant
Emulsifier
Controls Viscosity
Lifts away dirt and oil
Mixes oil and water
Controls product thickness
Traditional Use
A polyethylene glycol ester developed in the mid-20th century as a cosmetic emulsifier and surfactant. Created to improve stability and texture in modern skincare formulations.
Skin Types
●all-skin-types
Best For
General
Melanin-Rich Skin
Suitable
Pregnancy & Breastfeeding Safe
Yes
EWG
4
CIR
Safe w/Qualifications
Pregnancy
Yes
CIR Safety Findings
Not a Sensitizer
medical-approval
all-shades-safe
Regulatory Agencies
Verified Feb 2026
Data: PubChem · CosIng · EWG · CIR