Tea Tree Essential Oils - 10 ml 100% pure and natural Tea Tree Essential Oils. Use during an aromatherapy session in atmospheric diffusion. Tea Tree/Tea Tree (melaleuca alternifolia): fresh, powerful, herbaceous, tonic and sanitizing. Our oils are the result of a meticulous research designed to offer you quality products not modified, undiluted, not deterpenated, not rectified and not reconstituted.