What is a common result of improper filing techniques on natural nails?

Improper filing techniques can lead to splitting and peeling of natural nails due to the way the nail structure is affected. When nails are filed incorrectly—such as using a back-and-forth motion, applying too much pressure, or using an abrasive file—this can weaken the nail's layers. The keratin structure of the nail may become damaged, which can facilitate splitting at the edges and cause the layers of the nail to peel apart. This results in a weakened nail that is more prone to breakage and visible damage.

Conversely, options like stronger nails, unattractive shapes, and faster growth do not directly result from improper filing techniques. While an unattractive shape might be an indirect consequence if the filing is done poorly, the primary concern with improper techniques is the health and integrity of the nail itself, making splitting and peeling the most accurate outcome.