What is the correct angle for filing natural nails?

The correct angle for filing natural nails is 45 degrees because this angle effectively allows for controlled filing that shapes the nails without causing damage. When filing at a 45-degree angle, the file can remove any rough edges smoothly while maintaining the integrity of the nail structure. This angle promotes even pressure distribution across the nail, reducing the risk of splitting or breaking, which is essential for healthy nail care.

By contrast, angles that are too acute or too steep can lead to ineffective filing and potential nail damage. A steeper angle, like 90 degrees, may put too much pressure on the nails and can easily cause them to split or break. Similarly, filing at a very shallow angle, such as 30 degrees, might not effectively reshape the nails and can result in uneven edges. Therefore, the 45-degree angle strikes the optimal balance for both filing efficiency and nail health.