How do i know if my toenail fungus has cleared up?

Culture: The only real way to know is to have a fungal culture done. But if the nail looks normal and clear this will give you a good idea.

Look at your nails.: To a great extent you can tell by the appearance to see if it has improved. However, the only way to know if you have a true mycological cure is to have a sample of the nail taken and submitted to a laboratory for testing.