Chitosan is widely used in the biomedical field for wound healing due to its antimicrobial and biodegradable properties. It promotes tissue regeneration and helps in reducing infection risks. In agriculture, it acts as a natural biopesticide, enhancing plant growth and protecting crops from pathogens. The food industry utilizes it as a preservative to extend shelf life by inhibiting microbial growth. It is also employed in water treatment processes to remove heavy metals and other contaminants through its chelating abilities. Additionally, chitosan is used in cosmetics for its moisturizing and anti-aging effects, improving skin health. Its versatility makes it valuable across various industries.