L-()-Lactic acid is widely used in the food industry as a preservative, flavor enhancer, and pH regulator. It is commonly added to baked goods, dairy products, and beverages to extend shelf life and improve taste. In the cosmetic industry, it serves as an active ingredient in skincare products due to its exfoliating and moisturizing properties, helping to reduce wrinkles and improve skin texture. Additionally, it is utilized in the pharmaceutical sector for formulating medications and as a raw material in biodegradable plastics, contributing to environmentally friendly packaging solutions. Its versatility also extends to industrial applications, where it is used in cleaning agents and metal treatment processes.