AMMONIUM ACRYLOYLDIMETHYLTAURATE/VP COPOLYMER is a copolymer derived from acryloyldimethyltaurate and vinylpyrrolidone monomers that is often used in cosmetics as a thickening agent and to improve the texture and stability of formulations. It helps to create products with a smooth and creamy consistency, enhancing their ability to spread and adhere to the skin.