Recommended by many dentists, Desert Essence Tea Tree Oil Mouthwash naturally cleans, helps to reduce plaque buildup, and refreshes the mouth and gums. Tea Tree Oil is a completely natural plant extract with inherent antiseptic properties. It is distilled from the leaves of the Australian Melaleuca Alternifolia tree. Desert Essence clear Tea Tree Oil Mouthwash contains no alcohol, artificial colors or sweeteners and is flavored with the natural essential oil of spearmint.