Octoxynol-25
AKA “Octoxynol-25, Polyoxyethylene Octyl Phenol”
Surfactant
Ingredient Facts
Octoxynol-25
AKA: Polyoxyethylene Octyl Phenol
Surfactant · Cleansing · EWG: 4
Synthetic
Cleanser
Emulsifier
Not Clean
Poly(oxy-1,2-ethanediyl), .alpha.-[4-(1,1,3,3-tetramethylbutyl)phenyl]-.omega.-hydroxy- (25 mol EO average molar ratio)
CAS #
9002-93-1
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.
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.
Removes Impurities
Cleansing Surfactant
Emulsifier
Antioxidant Protection
Reduces Inflammation
Locks In Moisture
Mixes Oil & Water
Traditional Use
Developed in the mid-20th century as a nonionic surfactant and emulsifier derived from octylphenol and ethylene oxide. Used in cosmetics and pharmaceuticals for its ability to solubilize oils and create stable emulsions.
Skin Types
●all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
Verified Jun 2026
Data: CosIng · EWG · CIR