Octoxynol-40
AKA “Octoxynol-40, Polyoxyethylene Octyl Phenol”
Synthetic
Ingredient Facts
Octoxynol-40
AKA: Polyoxyethylene Octyl Phenol
Synthetic · Cleansing · EWG: 4
Synthetic
Cleanser
Emulsifier
Synthetic
Clean
A gentle cleansing agent that helps remove oil and dirt while keeping formulas stable and smooth. Works to lift away impurities without stripping skin.
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 as a highly ethoxylated nonionic surfactant in the cosmetic chemistry era of the 1950s-60s. Used as a powerful emulsifier and solubilizing agent in skincare and personal care formulations.
Skin Types
●all-skin-types
Best For
General
Melanin-Rich Skin
Suitable
Pregnancy & Breastfeeding Safe
Yes
Verified Feb 2026
Data: CosIng · EWG · CIR