Widely used in the food and beverage industry as an acidulant, DL-lactic acid solution helps regulate pH and enhances flavor stability. It acts as a preservative by inhibiting microbial growth, extending shelf life in products like dairy, canned vegetables, and salad dressings. In the pharmaceutical sector, it serves as an excipient in drug formulations and supports controlled release mechanisms. The cosmetic industry utilizes it for pH adjustment and as a moisturizing agent due to its hygroscopic properties. Additionally, it plays a role in leather tanning by improving dye absorption and in textile processing for synthetic fiber treatment. Its biodegradability makes it suitable for eco-friendly cleaning products and water treatment systems.