DL-Lysine dihydrochloride is widely used in the food and beverage industry as a nutritional supplement to enhance the protein content in various products. It is particularly valuable in fortifying foods aimed at improving dietary intake, especially in regions where protein deficiency is prevalent. In the pharmaceutical sector, it serves as a key ingredient in formulations designed to support immune function and promote tissue repair. Additionally, it is utilized in animal feed to boost growth and overall health in livestock. Its role in skincare products is also notable, where it aids in collagen synthesis, contributing to skin elasticity and repair.