Petitgrain oil is a natural essential oil that is extracted from the leaves and twigs of the bitter orange tree (Citrus aurantium). It has a fresh, woody, and slightly floral aroma that is often used in perfumery and aromatherapy.The oil is obtained through a steam distillation process, where the leaves and twigs are heated with steam to release the essential oil. This method ensures that the oil retains its natural fragrance and therapeutic properties.