Used as an intermediate in the synthesis of pharmaceuticals, agrochemicals, and other fine chemicals requiring heterocyclic structures. Also serves as a crosslinking agent in some polymer applications, improving durability and water resistance. Derivatives of imidazolidine are commonly employed as preservatives and antimicrobial agents in cosmetics and personal care products, such as lotions, shampoos, and creams. Due to its chemical reactivity, it may cause skin irritation in sensitive individuals.