Polyquaternium-28 is widely used in the personal care and cosmetics industry, primarily as a conditioning agent. It is commonly found in hair care products such as shampoos, conditioners, and styling formulations. Its main function is to improve the texture and manageability of hair by reducing static, enhancing smoothness, and providing a silky feel. Additionally, it helps in detangling and reducing frizz, making it a popular ingredient in products designed for dry or damaged hair. Its film-forming properties also contribute to protecting hair from environmental stressors and heat damage. In skincare, it is occasionally used to enhance the feel and spreadability of creams and lotions, providing a soft and smooth finish on the skin.