Used as a preservative in cosmetics, pharmaceuticals, and food products due to its effective antimicrobial properties. It prevents the growth of bacteria, yeast, and molds, extending shelf life. Commonly found in lotions, creams, shampoos, and liquid medications where long-term stability is required. Its sodium salt form improves solubility in water-based formulations compared to the free acid form, making it more suitable for use in a wide range of aqueous products.