This is an excellent book that takes a real genuine holistic approch to aromatherapy. It is the most interesting and useful reference out of the 12 aromatherapy books I own, and is interesting to read. The author covers every aspect of aromatherapy, including essential oil extraction, massage, safety and specific info on each oil. She also promotes a holistic and uncommercial outlook on aromatherapy, which is a real change from all the "new age interest" type books on the market. This book is a must read for any one who is interested in understanding the true art and benefits of aromatherapy.