In this comprehensive guide, Jeanne Rose profiles 375 essential oils and hydrosols commonly used in aromatherapy according to their plant families, chemical components, actions, and uses. As a well-known herbalist and aromatherapist, Jeanne Rose adds historical lore from Chinese alchemy and botany as well as western botanical sources. She expertly describes active properties and uses, and provides a wealth of new information about hydrosols, which she refers to as "the homeopathics of aromatherapy," a true synergism of herbalism and aromatherapy. This book is a must have for any aromatherapy enthusiast.