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Is Isobutylene/Sodium Maleate Copolymer vegetarian?

Isobutylene/Sodium Maleate Copolymer

Vegetarian Vegetarian
Vegan Vegan

Isobutylene/Sodium Maleate Copolymer is a synthetic polymer formed from isobutylene and the disodium salt of maleic acid, used as a film-forming and thickening agent in cosmetics.

INCI name Isobutylene/Sodium Maleate Copolymer
CAS number 55031-88-4
CosIng ID 76725
Last reviewed 4 July 2026

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

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