Is Benzene, ethenyl-, polymer with 2-methyl-1-propene vegan?

Isobutylene/Styrene Copolymer is also known as Benzene, ethenyl-, polymer with 2-methyl-1-propene.

Isobutylene/Styrene Copolymer is a synthetic copolymer made from isobutylene and styrene monomers, used as a film-forming agent in cosmetics.

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