Is alastin skin nectar safe to use on the penis to help the skin heal down there from a tea tree oil burn?

See a dermatologist: It is difficult to answer this question without performing a physical exam to determine the extent of the burn. You should see your primary care doctor or dermatologist to evaluate the burn and determine the most appropriate treatment. Otherwise, find your local urgent care center to have a physician evaluate the burn. Topical silver sulfadiazine would be a more appropriate treatment for burns.