How long does ivermectin stay in your system to fight scabies? can i use tea tree oil 24 hrs after taking ivermectin and topical permethrin cream?

Unusual choice: Ivermectin stays in your blood for a day. It's an unusual choice of therapy for scabies infestation and is usually reserved for patients who do not have functional immune system. Permethrin alone, applied as directed to the whole body and left on overnight before washing, should do the trick with one initial treatment followed by a second treatment 7 days later if needed. Tea tree oil is ok.