Sodium dehydroacetate, commonly known as DHA sodium salt, is a white crystalline powder widely employed as a potent preservative and antimicrobial agent in the cosmetic, personal care, and, to a lesser extent, food industries. Derived from dehydroacetic acid, this compound effectively inhibits the growth of bacteria and fungi, serving as a reliable solution for extending the shelf life of various formulations. Its antimicrobial properties make it particularly valuable in cosmetics and skincare products, ensuring microbiological stability and product safety. Sodium dehydroacetate also functions as a pH stabilizer, contributing to the overall stability of formulations. While primarily recognized for its role in the cosmetic industry, it finds applications in select food and pharmaceutical formulations, emphasizing its versatility as a preservative with broad-spectrum efficacy.