Isosteareth-50
AKA “Isosteareth-2, RefChem:1087831, Agnique MMF, HETOXOL IS-2, PEG-12 Isostearyl ether, PEG-50 Isostearyl ether”
Synthetic
Ingredient Facts
Isosteareth-50
AKA: Isosteareth-2, RefChem:1087831, Agnique MMF, HETOXOL IS-2, PEG-12 Isostearyl ether, PEG-50 Isostearyl ether
Synthetic · Cleansing · EWG: 4
Plant-Derived
Cleanser
Emulsifier
Synthetic
Clean
A gentle cleanser and emulsifier that helps remove impurities while keeping products smooth and well-blended for better application.
Effective at 11.51%
Formula
C22H46O3
Mol. Weight
358.60
CAS #
52292-17-8
Form
Liquid
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.
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 highly hydrophilic polyethylene glycol ether developed as an emulsifier and solubilizer. Created to improve the stability and texture of cosmetic formulations.
Skin Types
●all-skin-types
Best For
General
Melanin-Rich Skin
Suitable
Pregnancy & Breastfeeding Safe
Yes
EWG
4
CIR
Safe
Pregnancy
Yes
CIR Safety Findings
Not a Sensitizer
medical-approval
all-shades-safe
Concentration Guide
0.02%
23.0%
0%32%
Effective Range
CIR reported use: 18-23 | 0.02-0.4 | 0.2-1
Regulatory Agencies
Verified Feb 2026
Data: PubChem · CosIng · EWG · CIR