In the twentieth century, most medicines used to synthetic substances developed and manufactured by pharmacologists. In recent years began, however, the ancient model, more and more to use natural substances, which is contained in plants. It is estimated that about one out of 2,000 species of tropical plants zone contains an important component of treatment. For therapeutic purposes, the whole plants (eg ziołolecznictwie), the individual parts or substances extracted from them.
Specialists concentrates aromatoterapii use aromatic plant oils, which they regard as "vital force" the plants, similar to the "life force" that is, human or animal blood.
Plants that can be used in aromatoterapii is very much needed, however, get much knowledge of them to be able to fully and safely use. The source of oils in different plants may vary their parts, sometimes producing essential oils from leaves, stems, roots, sometimes with rhizomes, shoots, bark, along with other seeds, fruit or flower petals.