Ultraviolet radiation from the sun kills fungi capable of causing athlete’s foot.

How long does it take for sunlight to kill fungus?

It could take three to six months of daily direct sunlight exposure to rid your nail of fungus. Expose your feet to as much natural light as possible. Wearing sandals is one way to help your feet get more sunlight exposure.

Does the sun make fungal infection worse?

Reduce the time you spend in the sun. It may trigger or worsen an episode, and a tan makes the rash more visible.