Is PEG-20 Sorbitan Isostearate vegetarian?

PEG-20 Sorbitan Isostearate is a nonionic surfactant formed by the ethoxylation of sorbitan isostearate, used as an emulsifier in cosmetics; the isostearic acid component may derive from plant or animal fat sources.

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

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