• 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.

• Aromatic Plant Project An Organization to promote the use of American aromatherapy products.

• International Aromatherapists and Tutors Association Explains their position in promoting the responsible use of aromatherapy products, based on appropriate research.

• International Federation of Aromatherapists Includes information on accredited schools, events and membership.

• International Fragrance Association Guidelines for safe usage of fragrant chemicals and essential oils in perfumes and skincare.

• 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 more.