Lactronic perfumes are a distinct class of fragrances characterized by the presence of lactones, a group of organic compounds that impart a sweet, creamy, and sometimes milky odor. These perfumes typically feature ingredients like linalool and linalyl acetate, which contribute to their lactonic notes. They are often described as having a comforting, cozy, and alluring scent profile, making them popular for use in personal care products, home fragrances, and fine perfumery.