Tea tree oil is said to be good for relieving congestion, cold, cough and flu. It has been used to heal acne, fungal infections, dandruff, vaginal infections, haemorrhoids, athlete’s foot, and is believed to soothe aching muscles and joint injuries. When added to bath water it helps control bacteria. Tea tree oil is not to be taken internally. It is usually used only on adults and must be kept away from children and pets. Don’t use it if you’re pregnant or lactating.