Tea Tree Oil: Science and Safety

Background 

• The tea tree grows on the swampy southeast coast of Australia. Its oil is produced from the leaves by steam distillation. 
• External use of tea tree oil is promoted for various conditions such as acne, athlete’s foot, lice, nail fungus, cuts, mite infection at the base of the eyelids, and insect bites. 

How Much Do We Know? 

• A small amount of research has been done on the topical use of tea tree oil for some health conditions. 

What Have We Learned?  

• Limited research suggests that tea tree oil might be helpful for acne, athlete’s foot, and nail fungus. However, overall, the research is insufficient to allow clear conclusions to be reached about the use of tea tree oil for these conditions. 
• Some early research shows that tea tree oil might be promising for treating mite infections at the base of the eyelids. 

What Do We Know About Safety? 

• Tea tree oil should not be swallowed. Taking it orally can cause serious harmful effects. 
• Most people can use topical products containing tea tree oil without problems.