Revised and significantly expanded, the latest edition of this handbook provides full information on the use of essential oils in the field of contemporary aromatherapy and aromatic therapy, based on the most up-to-date research evidence behind their therapeutic applications. The author provides a detailed account of how essential oils are created, how and where aromatherapy is used, and the underlying pharmacology and chemistry. This will be an indispensable text for all students and practitioners of aromatherapy and related disciplines, as well as anyone interested in the use of essential oils for health and well-being.