What is the correct way to file toenails?

Filing toenails straight across is the recommended technique to help prevent ingrown nails. This method allows the nail to grow normally without the edges digging into the skin of the surrounding toe. When nails are filed straight across, it helps maintain the natural shape of the nail, which is typically wider at the top and narrower at the tip. This straight filing method reduces the chances of the sides of the toenail penetrating the skin as the nail grows out.

Using a circular motion, filing into a point, or rounding the edges can contribute to the risk of ingrown toenails. Circular filing can create uneven edges, which may lead to more irritation and potential injury to the surrounding skin. Filing into a point may create sharp corners that could also dig into the skin, increasing the likelihood of ingrowth. While rounding the edges might seem aesthetically pleasing, it can similarly lead to problems if not done carefully and with proper technique. Thus, straight filing is the safest and most effective approach for nail health.