In 1985, Dr. Paul Belaiche, Chief of the Phytotherapy Department at the Faculty of Medicine, University of Paris, worked on several double-blind studies involving Tea Tree oil and its application as a remedy for candidiasis, chronic cystitis, staphylococcus, and streptococcus infections, and nail bed fungus. Tea Tree is a powerful immunostimulant, increasing the immune system's ability to fight disease. Aromatherapists recommend having Tea Tree available because of its antiseptic action against bacteria, fungi, and viruses. Tea Tree oil can be applied to disinfect cuts and wounds, pimples, and fungal infections. It is soothing to the skin and mucous membranes, and it is also effective as an insect repellant.
Tea Tree can be effective on pets as well, and is known to kill fleas and ticks.
Gargling with two drops in a glass of warm water improves sore throats and a few drops rubbed on the chest or back, or used in an inhaler, helps relieve nasal congestion. It is one of the few essential oils that can be applied directly to the skin without dilution. Tea Tree oil can be also be used topically to speed the healing of diaper rash, eczema, psoriasis, insect bites, and poison ivy. Simply add one teaspoon of tea tree oil to one-eighth cup of an oil such as almond oil. Apply to affected areas with a cotton ball or soft cloth.