Surfactants

Nonoxynol-9

INCI: NONOXYNOL-9
CAS 14409-72-4; 26027-38-3(generic); 26571-11-9; 37205-87-1(generic); 68412-54-4; 9016-45-9(generic)
Nonoxynol-9 is the ethoxylated alkyl phenol that conforms generally to the formula: (structure) where n has an average value of 9.
Generally Safe
This ingredient has a good safety profile based on available data.
Purpose

Function

Surfactant - Cleansing, Surfactant - Emulsifying
Profile

Properties

Silicone
Silicone free
Malassezia
Safe
Fungal Acne
Safe
Details

Description

Nonoxynol-9 is the ethoxylated alkyl phenol that conforms generally to the formula: (structure) where n has an average value of 9.

Reference

Identifiers

CAS Number
14409-72-4; 26027-38-3(generic); 26571-11-9; 37205-87-1(generic); 68412-54-4; 9016-45-9(generic)
INCI
NONOXYNOL-9
Category
Surfactants
Updated
Apr 23, 2026