Perfume oil is a combination of essential oils, absolutes, and aroma compounds that are used to create a pleasant scent. ATTAR, which is also known as otto or ATTAR of roses, is an essential oil derived from botanical sources. Irone is a synthetic aroma compound that is used in perfumery to add a woody, floral, and citrusy scent. Neroli is an essential oil derived from the blossom of the bitter orange tree and is used to add a sweet, floral, and citrusy scent to perfumes.