Tea tree oil comes from the evergreen leaves of the Australian Melaleuca Alternifolia tree. For more than a century it has been revered for its healing properties. Scientific evidence has shown its effectiveness for killing bacteria and reducing inflammation in the skin. It can be used to treat a variety of things including- inflamed blemishes and ingrown hair, nail fungus, cold sores, dandruff, and blisters. Great brands to try would be Young Living Essential Oils and Dessert Essence which can be found at your nearest Wholefoods, Vitamin Shoppe and Ulta stores.