CheckVegan

Is PEG-8 Undecylenate vegetarian?

PEG-8 Undecylenate

Vegetarian Vegetarian
Vegan Vegan

PEG-8 Undecylenate is the ester of undecylenic acid (derived from castor oil) ethoxylated with an average of 8 moles of ethylene oxide, used as a surfactant and emulsifier in cosmetics.

Also known as 10-Undecenoic Acid, Ethoxylated (8 mol EO average molar ratio)
INCI name PEG-8 Undecylenate
CAS number 83-79-4
CosIng ID 77401
Last reviewed 4 July 2026

An ingredient is considered vegetarian if it avoids components derived from killing an animal.

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