American College of Healthcare Sciences has been training, credentialing, and advancing aromatherapists globally Since 1978. Our graduates have been leading the wellness revolution with our sustainable values combined with cutting- edge, science-based holistic health education giving them a firm foundation to launch or enhance their wellness careers. ACHS' founding President, Dorene Petersen, was instrumental in establishing acceptance of formalized Accredited Aromatherapy Education in the United States. We created the first accredited aromatherapy degree in 2013; We offer the only accredited Master of Science degree in Aromatherapy in the USA. ACHS is proud to be NAHA Level I and II approved.