Polyquaternium-10 is a polymeric quaternary ammonium salt of hydroxyethyl cellulose. It is an anti-static agent, film former and fixative. It is widely used ingredient in all hair conditioning products.
Polyquaterniums find particular application in conditioners, shampoo, hair mousse, hair spray, hair dye, personal lubricant, and contact lens solutions. Because they are positively charged, they neutralize the negative charges of most shampoos and hair proteins and help hair lie flat. Their positive charges also ionically bond them to hair and skin. Some have antimicrobial properties.