Aromatherapy is a holistic healing process for the body and mind with the use of fragrances. The basis of this therapy lies in the essential oils contained in plant materials. These can be found in leaves, flowers, roots, seeds, bark and resin. These oils are highly concentrated and when extracted, can either be used in a pure form or diluted and blended with other oils to produce the required strength. Essential oils are medicinal and fragrant and travel through the blood stream reacting with hormones and enzymes. When the fragrance is inhaled the nerve ends in the nose transmit pleasurable signals to the brain which reacts to the positive power of the fragrant aroma inducing pleasant memories, restoring emotional balance and encouraging relaxation and energisation. Many of these fragrant oils have antiseptic and antitoxic qualities and often act as an antidote to viral infections, inflammations, aches and pains. Это и многое другое вы найдете в книге Utilization of Aeromatic Plants with Special References (Pushpendra Kumar Vishwakarma,Abhiram Rout and Ruchi Bhargava)