Polyquaternium-10 is widely used in the cosmetics and personal care industry due to its excellent conditioning and film-forming properties. It is commonly found in hair care products such as shampoos, conditioners, and styling gels, where it helps to improve hair texture, reduce frizz, and enhance manageability. Its ability to retain moisture makes it effective in hydrating and softening hair. Additionally, it is used in skincare formulations like lotions and creams to provide a smooth, silky feel and improve the product's spreadability. Polyquaternium-10 also acts as a stabilizer in emulsions, ensuring the consistency and shelf life of various cosmetic products. Its mild nature makes it suitable for sensitive skin and hair types.