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Isoceteth-15
AKA “Isocetyl alcohol ethoxylate, PEG-15 isocetyl ether”
Synthetic
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Ingredient Facts
Isoceteth-15
AKA: Isocetyl alcohol ethoxylate, PEG-15 isocetyl ether
Synthetic · Surfactant - Emulsifying | Surfactant - Cleansing · EWG: 4
Plant-Derived
Cleanser
Emulsifier
Synthetic
Clean
Poly(oxy-1,2-ethanediyl), .alpha.-isohexadecyl-.omega.-hydroxy- (15 mol EO average molar ratio) Science: Functions: Surfactant - Emulsifying Safety Ratings: CIR: Safe as used
CAS #
9002-92-0; 68439-50-9; 5274-68-0; 9004-95-9; 9005-00-9; 4536-30-5; 3055-93-4; 3055-94-5; 3055-95-6
Form
Liquid
Plant-Derived
Synthetic
Function
Surfactant - Emulsifying | Surfactant - Cleansing
Benefits
Emulsifier
Mixes Oil & Water
Traditional Use
Synthetic ethoxylated surfactant created for cosmetics in the late 20th century. Functions as an emulsifier and solubilizer to improve product stability and sensory feel in skincare formulations.
Skin Types
all-skin-types
Best For
Target
General
Melanin-Rich Skin
Suitable
Pregnancy Safe
Yes
EWG Score4
CIR Safety Findings
medical-approval, all-shades-safe, Not a Sensitizer
Concentration Guide
Industry reports use up to 21.0% across all product types. Source: CIR Safety Assessment (CIR Seq 581).
Regulatory Status
USA✔ permitted
EU⚠ restricted
JAPAN⚠ restricted
CANADA⚠ restricted
Verified Feb 2026
Data: CosIng · EWG · CIR