Chitosan is widely used in the medical field for wound healing due to its antimicrobial properties and ability to promote tissue regeneration. It is also employed in drug delivery systems, as it can encapsulate and release drugs in a controlled manner. In agriculture, chitosan acts as a natural biopesticide, enhancing plant growth and providing resistance to pathogens. The food industry utilizes it as a preservative to extend shelf life, a viscosity enhancer, and as a fat binder in dietary products. Additionally, chitosan is used in water treatment to remove heavy metals and other contaminants due to its chelating properties. In cosmetics, it is incorporated into skincare and haircare products for its moisturizing and film-forming abilities.