Polyvinylpyrrolidone (PVP), also commonly called polyvidone or povidone, is a water-soluble polymer made from the monomer N-vinylpyrrolidone. It functions as a binder, emulsion stabilizer, film former, hair fixative, and suspending agent. PVP is a fantastic ingredient to have in hair gels, sprays, and mousse. This ingredient is what keeps hair in place. This ingredient is often used in hair creams and curl defining creams.