Aromatherapy is an increasingly popular way for people to draw closer to the tranquility of nature, and to heal frazzled nerves and emotions. Here is the complete guide to 220 essential oils, the powerful concentrates extracted from actual plants. See how to use them safely, get to know their specific properties, and prepare them to achieve the results you want. For easy reference on specific uses, refer to the category listing of oil properties. Learn which ones are mood uplifters, energizers, stress reducers, pain relievers, and many other uses.