An aromatherapist is someone who uses essential oils and other natural ingredients to promote physical, emotional, and mental well-being through massage therapy or other treatments. They are trained in the use of aromatherapy techniques and have knowledge about different essential oils and their properties, which they can use to create personalized treatment plans for clients. Aromatherapists may work in spas, hospitals, or private practices, and they often focus on holistic approaches to health and wellness.