Trim toenails straight across after soaking feet in warm water for 10 to 15 minutes
Use a clean nail file or emery board to gently thin the nail surface
Keep feet clean and dry
Wear breathable shoes and moisture-wicking socks
Change socks daily or more often if sweaty
Use antifungal treatment if a fungal infection is present
Disinfect nail tools after each use
Avoid tight shoes that press on the toenails
See a podiatrist for professional nail trimming or thinning
Get medical evaluation if the nail is painful, discolored, very thick, or worsening