Essential oils are the real "key" to beauty, good health and complete harmony. Useful properties of essential oils have been known since ancient times, they were used by ancient Greeks, Romans, Egyptian pharaohs. Essential oil is a concentrated, volatile mixture of fragrant substances obtained from plant materials by pressing, extraction, distillation. It is thanks to aromatic oils that plants can boast of their unique fragrance. Each essential oil is unique and inimitable, includes at least hundreds of active substances and affects at once on chemical, physical and psychological levels.