PVP exists as white to slightly creamy white hygroscopic powder. It can dissolve in water and a variety of organic solvents. It has good hygroscopicity, film-forming capability, complexing ability and physiology compatibility. It can be used as film-forming agent, viscosity-enhancement agent, lubricator and adhesive; and used as assistant in skin-care products (Such as eye make-ups, lipsticks, deodorants and sunscreens). It's a new varieties of pharmaceutical excipients. It's mainly used as binder for tablet, dissolving assistant for injection, flow assistant.