Aromatherapy involves the use of essential oils (extracts or essences) from flowers, herbs, and trees to promote health and well-being. In the past decade, most people have turned to natural alternative therapies, such as aromatherapy, to treat stress and relieve disease symptoms.
Essential oils can be used in a variety of therapeutic ways. In addition, many essential oils are potent antibiotic agents. Aromatherapy can also be used to promote sleep, alleviate anxiety or pain, and improve mood. Although the psychological benefits of aromatherapy have been shown, the physiological benefits of essential oils, specifically their antibacterial effects, are still debatable.
Two classical essential oils are lavender and peppermint. Lavender is used to reduce stress and depression and promote relaxation; peppermint is used to treat headaches, digestive disorders, and muscle aches.
Source: Holistic and Complementary Tharapies