black, or even green," Weiss says. These can pop up anywhere on the nail, either in spots or vertically along the nail. Like many fungal infections, there are a few way to develop a nail fungus.

Maybe this sounds familiar: You're trimming your toenails, contemplating whether to polish them with Relentlessly Ruby or go dark with Black ... fungus commonly begins as a white or yellow spot ...

You may have white spots on your nails if you have a fungal ... According to Green, you should take these steps to prevent nail fungus: Wash your feet and hands thoroughly and dry completely.