I had a 2-year span of dealing with a fungus on a big toe. I wore sandals a lot, and even used nail glue to keep what little nail I had from falling off. The doctor prescribed Penlac, a liquid that I applied 2x a day for months - wasn't cheap and did not work. Eventually, it just got better. But, it did take a looonnggg time for my nail to finally regrow and look natural. It was lumpy and discolored for another year.