What, if any, are the caveats for tea tree oil use and tips on safe storage?
Is tea tree oil toxic? That’s the topic of my video, Is Tea Tree Oil Safe?. “Anecdotal evidence…suggests that the topical use of the oil is relatively safe, and that adverse events are minor, self-limiting and occasional.” Published data, however, add some caveats: It can be “toxic if ingested in higher doses and can also cause skin irritation at higher concentrations.”
Normally, tea tree oil reduces skin inflammation. Researchers injected histamine into the skin of 27 volunteers, the equivalent of getting bitten by a fire ant. The application of tea tree oil significantly decreased the associated swelling and discoloration—the big, red, swollen mark. As you can see in the graph below and at 0:45 in my video, the swelling and discoloration continues to get worse after application of a placebo oil,