Lactic acid derivatives are chemical compounds derived from lactic acid, which is produced during the fermentation of carbohydrates. These derivatives are often used in various industries, including food, cosmetics, and pharmaceuticals, due to their beneficial properties such as acting as preservatives, pH regulators, and moisturizing agents. Common examples of lactic acid derivatives include lactate salts, which are used in food preservation, and lactic acid esters, which serve as emulsifiers in cosmetic products. These compounds are valued for their safety and effectiveness, making them popular choices in formulations aimed at enhancing product quality and stability.