PEG-15 Stearamide
AKA “PEG-15 Stearamide, Stearic Acid Derivative
Surfactant
Ingredient Facts
Peg-15 stearamide
AKA: Stearic Acid Derivative
Surfactant · Emulsifying · EWG: 4
Plant-Derived
Cleanser
Emulsifier
Not Clean
Poly(oxy-1,2-ethanediyl), .alpha.-hydroxy-.omega.-[(1-oxooctadecyl)amino]- (15 mol EO average molar ratio)
See origin →
Functions
Emulsifying
Forces oil and water to stay mixed instead of separating into layers. The unsung hero holding your lotion together.
Emulsifier
Mixes Oil & Water
Traditional Use
A synthetic emulsifier developed in the mid-20th century from stearic acid and polyethylene glycol. Created to improve the stability and texture of cosmetic formulations without traditional animal-derived emulsifiers.
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
Concentration Guide
Dermal absorption: 100%. Source: CIR Safety Assessment (CIR Seq 772).
Regulatory Status
USApermitted
EUrestricted
JAPANrestricted
CANADArestricted
Verified Jun 2026
Data: CosIng · EWG · CIR