Widely used in the food industry as an acidulant, DL-lactic acid helps control pH and acts as a preservative in dairy products, beverages, and baked goods. It enhances flavor and extends shelf life by inhibiting microbial growth. In pharmaceuticals, it serves as a chiral intermediate in drug synthesis and is used in topical formulations for its keratolytic properties, aiding in skin exfoliation and treatment of acne. It is also employed in the production of biodegradable polymers like polylactic acid (PLA), used in packaging, textiles, and medical devices. In agriculture, it functions as a feed additive to improve silage quality by promoting fermentation and reducing spoilage. Its versatility in industrial cleaning agents comes from its ability to dissolve mineral deposits without damaging surfaces.