What is the proper technique for filing nails?

Filing from the outer edge towards the center is the proper technique for achieving an even and properly shaped nail. This method helps to prevent the nails from splitting or tearing, as filing in this direction maintains the integrity of the nail structure. By starting at the outer edge and working towards the center, the nail technician can create a smooth, uniform shape without causing undue stress or damage to the nail. This technique also allows for greater control over the filing process, resulting in a polished and professional appearance.

Other techniques mentioned, such as filing back and forth, can lead to uneven edges and increase the risk of breaking the nail. Furthermore, filing in a circular motion or at a diagonal angle can compromise the nail's strength and overall health, often leading to an undesirable shape or potential damage. Therefore, filing from the outer edge towards the center is the most effective and safest approach for nail care.