Tea Tree is a pure oil, harvested from the leaves of a tree (Melaleuca alternifolia), native to Australia. Traditionally, it has been used as a topical agent for the skin. Nature's Bounty Tea Tree Oil is a plant based skin topical made with 100% pure Australian oil. Our superior grade of Tea Tree Oil is composed of less than 5% cineole and over 35% terpinen-4-ol which exceeds the Australian government's standards qualifying it as "Pharmaceutical Grade”.