Magic of Advanced Aromatherapy' takes the Therapeutic Cross-Referencing knowledge taught in the first book 'Magic of Aromatherapy, ' one step further. What is a sexy way of saying chemical constituent? I don't think there is one, but the healing effects when you know why you are choosing that specific essential oil is life-changing. The main complaint I hear in my clinic is about pain, and the one thing that is a proven benefit of using essential oils is the ability to alleviate pain. Now you can find out why a particular essential oil has more ability to heal than another. Constance has been teaching students for over twenty years, learn what she teaches her students.