Tea tree oil: a natural antiseptic essential oil, steam distilled from the leaf of Melaleuca alternifolia. 100% Pure Therapeutic grade antiseptic essential oil. Recommended for general first aid uses such as cuts, burns, abrasions, insect bites, bee stings, rashes, impetigo, boils, sinus problems, sore throat, thrush, fingernail and toenail infections. Tea Tree Therapy Tea Tree Oil is a powerful medicine which is relatively gentle to the skin. It penetrates and heals while being kind to healthy tissue. Clinical trials have proven its value in treating sinusitis, sore throat, candida and many other conditions.