C30-50 Pareth-3
molecular structure · PubChem
AKA: Polyethylene Glycol Ether, PEG Surfactant
Synthetic
Cleanser
Emulsifier
Not Clean
Alcohols, C30-50, ethoxylated (3 mol EO average molar ratio)
CAS #
246538-85-2
Form
Liquid
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
Removes Impurities
Mixes Oil & Water
Traditional Use
A synthetic surfactant and emulsifier created in the 20th century as an alternative to traditional soap and plant-based emulsifiers, offering improved stability and consistency in cosmetic products.
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