Poly-L-aspartic acid is widely used as a biodegradable alternative to traditional polycarboxylates in water treatment processes. It effectively prevents scale formation and inhibits corrosion in industrial cooling and boiler systems, making it an environmentally friendly choice for managing water quality. In agriculture, it serves as a soil conditioner, enhancing nutrient absorption and improving crop yield by reducing soil erosion and increasing water retention. Additionally, it is utilized in the formulation of detergents and cleaning agents, where it acts as a chelating agent to bind metal ions, improving cleaning efficiency while being less harmful to aquatic ecosystems. Its biocompatibility also makes it suitable for biomedical applications, such as drug delivery systems and tissue engineering scaffolds.