The term "aromatherapy" indicates the use of aromatic essences also known as essential oils or volatile oils, to ensure well-being, to prevent the disease or to treat certain morbid affections. For "aromatherapy" means a holistic healing method that can act on the physical, mental and spiritual through the 'use of essential oils. The word aromatherapy comes from the French term "aromath rapie", coined by the father of modern aromatherapy, or the chemist Rene Maurice Gattefosse who studied the properties of the essential oil of lavender in medicine. Essential oils are highly volatile substances, which thanks to this feature can easily reach our nose. Among the complementary therapies, aromatherapy is one of the best known and one that is growing rapidly worldwide. Its therapeutic value is increasingly appreciated by researchers and doctors. Essential oils are precious fluids, by the sweet scent, extracted from many varieties of plants. Of fact, they are used much more than you think. There are many cures, perfumes and beauty products. Essential oils are not oily essences, especially concentrated in some parts of the plant: flowers, resin, bark, roots, peel, leaves, fruits; volatile fractions are obtained from plants by steam distillation. They have a complex composition. Are poorly soluble in aqueous solutions. Intensely stimulate the sense of smell, because they evaporate at room temperature.Essential oils have the physical, chemical and therapeutic. They can be considered as the soul of the plant, as they are the result of the extraction, by means of special processes, the essence of the energy plant itself. Their action is never just something limited and highly specific for an organ or an apparatus, but they have rather more general action on the organism in all its affections and aromatherapy should not be seen only as a remedy purely symptomatic, but as a real systemic treatment. The essential oils give energy and lucidity, care for your skin and are good for the body and the spirit. The composition of a natural essence is much more complex than the sum of its constituents. Essences chemically reproduced in the laboratory, in fact, generate a mixture only apparently equal to the original, as shown by comparison of the activity of natural and synthetic substances.