Aromatherapy:

Aromatherapy uses "essential oils" (the volatile oils distilled from plants) to treat emotional disorders such as stress and anxiety as well as a wide range of other ailments. Oils are massaged into the skin, inhaled, or placed in baths. Aromatherapy is often used in conjunction with massage therapy, acupuncture, reflexology, herbology, chiropractic, and other holistic treatments.