Polyquaternium-10 is widely used in the personal care and cosmetic industry due to its 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 softness, reduce static, and enhance manageability. In skincare formulations, it acts as a moisturizing agent, helping to retain hydration and improve the texture of the skin. Additionally, it is used in various leave-in treatments and serums to provide a smooth, silky feel and protect hair from environmental damage. Its ability to form a protective film on surfaces makes it a valuable ingredient in products designed to enhance the appearance and health of hair and skin.