What is the recommended angle for filing a nail?

The recommended angle for filing a nail is 45 degrees, which strikes a balance between effectively shaping the nail and minimizing the risk of damage. Filing at this angle allows for more control and precision, ensuring a smoother edge and reducing the likelihood of splitting or tearing the nail. A steeper angle, such as 60 or 90 degrees, can be more aggressive and potentially harmful to both the natural nail and the surrounding skin. Conversely, a more shallow angle like 30 degrees may not provide the adequate shaping needed for a well-groomed appearance. The 45-degree angle is therefore considered optimal for both aesthetics and nail health.