In the early stages of an ingrown toenail, soak your foot in warm water containing antimicrobial soap or a few tablespoons of salt. Dry your foot and apply an over-the-counter antibiotic ointment and a clean dressing. Do not cut your nail. For the next few days, wear open-toed or loose-fitting shoes. When the nail grows out, cut it straight across.
More advanced ingrown toenails require the attention of a healthcare professional, such as a podiatrist.