Peg 100 Stearate
AKA “● N
Synthetic
Ingredient Facts
Peg 100 stearate
AKA: ● N
Synthetic · Emollient · EWG: 2
Plant-Derived Synthetic
Emollient
Cleanser
Plant Oil
Synthetic
Clean
Restricted:EWG VERIFIED products cannot contain this ingredient without adequate substantiation. Science: Origin: Botanic/Natural Safety Ratings: EWG: 2/10 (Low Hazard)
Formula
C20H40O3
Mol. Weight
328.5
CAS #
9004-99-3
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.
Emollient
Fills in the tiny cracks between skin cells to make everything feel smooth and soft. The "silky finish" ingredient.
Viscosity Controlling
Cleansing Surfactant
Traditional Use
A polyethylene glycol ester developed in the mid-20th century as an emulsifier and solubilizer in cosmetics to improve product stability and spreadability.
Skin Types
all-skin-types, gentle
Best For
General
Melanin-Rich Skin
Highly Suitable
Pregnancy & Breastfeeding Safe
Yes
EWG
2
CIR
Safe
Pregnancy
Yes
CIR Safety Findings
ewg-2
pregnancy-nursing-safe
all-shades-safe
Regulatory Status
USApermitted
EUrestricted
JAPANrestricted
CANADArestricted
Verified Feb 2026
Data: PubChem · CosIng · EWG · CIR