Chitosan is a natural biopolymer derived from chitin, which is found in the shells of crustaceans like shrimp and crabs. It is a white, odorless powder that is often used in various applications, including food preservation, water purification, and even as a dietary supplement. Chitosan is known for its ability to bind fats and cholesterol, making it popular among those looking to manage their weight. In addition to its health benefits, chitosan is also environmentally friendly. It is biodegradable and can be used in agriculture as a natural pesticide or soil conditioner. This versatility makes chitosan an important material in both health and environmental sectors.