PEG-50 Stearamine
molecular structure · PubChem
AKA: Polyethylene Glycol 50 Stearamine, PEG-50 Stearyl Amine
Plant-Derived
Cleanser
Emulsifier
Plant Oil
Not Clean
Octadecanamine, ethoxylated (50 mol EO average molar ratio)
CAS #
9003-93-4
Form
Liquid
Functions
Antistatic
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.
Reduces Static
Cleansing Surfactant
Emulsifier
Lifts away dirt and oil
Reduces flyaways
Mixes oil and water
Traditional Use
A synthetic surfactant combining polyethylene glycol with stearamine derived from stearic acid. Created in the 20th century to improve emulsification and conditioning in cosmetic formulations.
EWG
4
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
Not a Sensitizer
medical-approval
all-shades-safe
Regulatory Agencies
Skin Types
●all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
The paper trail
🔬Peer-reviewednone on file
⚖️Regulatory1 listing →
🛡️Safety-assessed1 review →
Counts, not a verdict. A listing isn't a study. The trail, you decide.
Verified Jun 2026
Data: CosIng · EWG · CIR