Chitosan is widely used in the agricultural sector as a natural biostimulant and elicitor, enhancing plant growth and improving resistance to diseases. It is applied as a seed coating or foliar spray to boost crop yields and promote healthier plants. In the food industry, it serves as a natural preservative and edible coating, extending the shelf life of fruits, vegetables, and seafood by inhibiting microbial growth and reducing oxidation.

In the medical and pharmaceutical fields, chitosan is utilized for wound healing and as a hemostatic agent due to its biocompatibility, antimicrobial properties, and ability to promote tissue regeneration while reducing inflammation. It is also employed in drug delivery systems, where it acts as a carrier for controlled release of medications, improving their efficacy and stability. In the cosmetics industry, it is used in skincare products to provide moisturizing effects and stimulate collagen production, enhancing skin health. Additionally, chitosan is used in water treatment processes to remove heavy metals, dyes, and other pollutants, making it an effective agent for environmental remediation. Its versatility and eco-friendly nature make it a valuable material across various industries.