Wrong question: Cyanide is "natural". So is poison ivy. What you need to know is what is effective & what is safe. Otc you can get Miconazole or Clotrimazole cream: cheap, safe, effective. You can also get head& shoulders or selsun or ketoconazole shampoo. Rub on the shampoo 1 or 2 hours before you get in the shower. Prescription azole tabs are the easiest treatment.
Answered 11/28/2017
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