I love Tea Tree oil, its great for so many things and its absolutely safe to use even for babies. Tea Tree comes from Melaleuca trees, they grow like crazy in Australia. Tea Tree is antiviral, antifungal as well as antibacterial. It works on herpes (viral); athletics foot (fungal) and it will kill e-coli (bacterial )from your cutting board. Tee Tree works well on any weepy type of skin disorder and helps to control mucous.
I also use Tea Tree on all my canine/feline wounds. I make a mixture of Tea Tree and water and compress wounds for 15 minutes. The compress is also good to use on your chest if you are feeling congested.
Remember if you are buying essential oils you do get what you pay for! Theres a lot of cheep and therefore not very good quality aromatherapy oils out there. If youre using them just to diffuse for scents then the cheep ones are O.K., however anything I put on my skin must be the highest quality.
The only brands I buy are from Swiss Aromatics, San Rafael or Elizabeth Van Buren, Santa Cruz.