Chitosan is widely used in agriculture as a natural biostimulant and pesticide. It enhances plant growth, improves soil quality, and boosts resistance to diseases and pests. In the food industry, it serves as a natural preservative, extending the shelf life of products by inhibiting microbial growth. It is also used in edible coatings for fruits and vegetables to maintain freshness. In medicine, chitosan is utilized in wound healing due to its antimicrobial and hemostatic properties. It is a key component in drug delivery systems, enabling controlled release of medications. Additionally, it is employed in water treatment to remove heavy metals and other contaminants. In cosmetics, chitosan is added to skincare products for its moisturizing and anti-aging effects. Its versatility makes it valuable across multiple industries.