Aromatherapy Registration Council Information on the National Examination in Aromatherapy, available through the ARC. Includes frequently asked questions, how to apply, what's new and contact information. http://www.aromatherapycouncil.org/

Aromatic Plant Project An Organization to promote the use of American aromatherapy products. http://www.aromaticplantproject.com/

International Aromatherapists and Tutors Association Explains their position in promoting the responsible use of aromatherapy products, based on appropriate research. http://www.aroma-iata.com/

International Federation of Aromatherapists includes information on accredited schools, events and membership. http://www.ifa.org.au/

International Federation of Aromatherapists (IFA) professional association for aromatherapists, playing a leading role in U.K. practice and training. http://www.int-fed-aromatherapy.co.uk/

International Fragrance Association Guidelines for safe usage of fragrant chemicals and essential oils in perfumes and skincare. http://www.ifraorg.org/

National Association for Holistic Aromatherapy dedicated to enhancing public awareness of the benefits of aromatherapy. Includes NAHA approved schools, calendar of events, directory of retailers, and related books and links. http://www.naha.org/