Isosteareth-15
molecular structure · PubChem
AKA: Isosteareth-2, 2-[2-(16-methylheptadecoxy)ethoxy]ethanol, 52292-17-8, Agnique MMF, HETOXOL IS-2, PEG-12 Isostearyl ether, PEG-50 Isostearyl ether
Plant-Derived
Cleanser
Emulsifier
Not Clean
Polyoxyethylene (15) Isostearyl Ether
Effective at 11.51%
Formula
C22H46O3
Mol. Weight
358.60
CAS #
52292-17-8
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
Developed as a synthetic surfactant and emulsifier in the cosmetics industry. Created to improve texture and stability in personal care formulations.
EWG
4
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
Not a Sensitizer
medical-approval
all-shades-safe
Concentration Guide
0.02%
23.0%
0%32%
Reported use
CIR reported use: 18-23 | 0.02-0.4 | 0.2-1
Regulatory Agencies
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: PubChem · CosIng · EWG · CIR