Evidence

Research on tea tree oil use for specific conditions shows:

• Acne. Research suggests that a treatment gel containing tea tree oil might be effective at relieving acne.
• Dandruff. A tea tree oil shampoo used for four weeks has been shown to be effective at treating dandruff.
• Athlete's foot. A tea tree oil cream, applied twice daily for one month, has been shown to be effective in relieving symptoms of athlete's foot.
• Lice. When used in combination with lavender oil, tea tree oil has been shown to be effective at treating lice eggs.
• Nail fungus. Research hasn't shown tea tree oil used in its pure form or in combination with other antifungal therapies to be effective in treating toenail fungus.

Results might vary because there are no standardized methods for harvesting tea tree oil or creating products containing the oil.