Good foot hygiene is essential. Wash your feet daily with an antibacterial soap; be sure to wash between the toes. Dry the feet thoroughly, then apply cornstarch, foot powder, or an antifungal powder to your feet. Wear wicking socks made of natural or acrylic fiber blends that draw the moisture away from your feet instead of trapping it. Some synthetic blends are designed to wick moisture away from the skin and work best to keep the feet dry. One hundred percent cotton socks absorb moisture but do not wick it away from the skin and frequently lead to blisters, so they should be avoided.
It’s also a good idea to change socks during the day. Stash an extra pair of socks at school or at work, and change socks mid-way through the day. Wear shoes that are made of breathable materials.
A technique called iontophoresis, which uses water to conduct a mild electrical current through the skin, has been found helpful for people with sweaty feet. People can purchase iontophoresis machines for at-home use.