The Copolymer of Maleic and Acrylic Acid (MA/AA) is a water-soluble polymer made by polymerizing maleic acid with acrylic acid. It is commonly used as a dispersant, thickener, and stabilizer in various formulations, especially in cosmetics and water treatment. The copolymer provides excellent viscosity control, improves product stability, and helps in controlling the release of active ingredients in cosmetic formulations.