Chitosan quaternary ammonium salt is widely used in the medical field for its antimicrobial properties. It is incorporated into wound dressings to prevent infections and promote healing. In cosmetics, it acts as a conditioning agent in hair and skin care products, enhancing moisture retention and improving texture. The compound is also utilized in water treatment processes to remove contaminants and purify water effectively. Additionally, it serves as a coating material in the food industry to extend the shelf life of perishable items by inhibiting microbial growth. Its ability to form films and gels makes it valuable in drug delivery systems, where it helps in the controlled release of medications. In agriculture, it functions as a plant growth stimulant and improves nutrient absorption efficiency.