KATHI KEVILLE is an internationally known herbalist and aromatherapist. The author of 12 books, she has taught seminars for more than 40 years and is the director of the American Herb Association in Nevada City, California. MINDY GREEN has worked in the natural products industry for more than 35 years. She is a founding member of the American Herbalists Guild and is the clinical aromatherapist for the Aveda Corporation in Minneapolis, Minnesota.