Polyvinyl Pyrrolidone - PVP K-90Poly Vinyl Pyrrolidone (PVP) K 90 is a synthetic polymer known for its unique amorphous and hygroscopic characteristics. As a water soluble, non ionic polymer, it maintains a stable pH level, making it highly suitable for cosmetic formulations. One of its key features is the ability to form a hard, glossy film on the skin, which dries and can be easily removed. This property is particularly valuable in various cosmetic applications. PVP K 90 also