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Is Isobutyl Isostearate vegetarian?

Isobutyl Isostearate

Isobutyl Isostearate is the ester of isobutyl alcohol and isostearic acid, used as an emollient in cosmetics. Isostearic acid may be derived from plant or animal fatty acid sources, so the origin cannot be confirmed in all cases.

INCI name Isobutyl Isostearate
CAS number 151270-66-5
CosIng ID 90146
Last reviewed 4 July 2026

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

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