Essential oil characteristics and effects, but also the products of the very same tree can vary grossly. Lavender oil has long been used in the production of perfume. However, it can be estrogenic and antiandrogenic, causing problems for prepubescent boys and pregnant women, in particular. Lavender essential oil is also used as an insect repellent. Rose oil is produced from the petals of "Rosa damascena" and "Rosa centifolia". Steam-distilled rose oil is known as "rose otto", while the solvent extracted product is known as "rose absolute". The potential danger of an essential oil is sometimes relative to its level or grade of
Essential oil endings. Some essential oils, such as clove oil or eugenol, were popular for many hundred years in dentistry as antiseptics and local anesthetics. Aromatherapy is a form of alternative medicine in which healing effects are ascribed to the aromatic compounds in essential oils and other plant extracts. Aromatherapy may be useful to induce relaxation, but there is not sufficient evidence that essential oils can effectively treat any condition. Essential oils should not be interpreted to be cures for chronic disease, or other illnesses, as scientific research does not support this. Much of the research on the use of essential oils