Nancy B. writes Hello Robert, I met you at the AIA conference in Denver, CO 4 years ago. I follow your blog and have subscribed to your posts and comments. You are such a wealth of knowledge and I love the way to combine research and common sense. I have a question...
The Tisserand Institute
Visit The Tisserand Institute for the latest from Robert Tisserand in the science and the effective, safe and sustainable use of essential oils in all aspects of aromatherapy.