N-L-α-aspartyl-L-leucine is primarily utilized in the food and beverage industry as a flavor enhancer. Its unique properties contribute to the umami taste, making it a valuable additive in soups, sauces, and processed foods. Additionally, it is used in dietary supplements to support muscle recovery and growth due to its amino acid composition. In the pharmaceutical sector, it serves as an intermediate in the synthesis of peptides and other bioactive compounds. Its application in cosmetic formulations is also notable, where it aids in skin hydration and the maintenance of skin barrier function.