Replied by Ted (Bangkok, Thailand) on 05/11/2014
Most fungal infections is suppressed topically is always fine, there is no accumulation. A person can take these pinch of borax for several months. Sodium thiosulfate and potassium iodide also helps. They can be applied in solutions too. In some cases vinegar is also anti fungal as well as red LED light shown on the head of 1 to 3 hours.
Ted