Is Butene, polymer with 2-methyl-1-propene vegan?

Butene/Isobutene Copolymer is also known as Butene, polymer with 2-methyl-1-propene.

Butene/Isobutene Copolymer is a synthetic copolymer of butene and isobutene, derived from petroleum cracking, used as a film-forming and thickening agent in cosmetics.

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