Which of the following should be avoided to maintain healthy nails?

To maintain healthy nails, it is important to manage exposure to water. Excessive exposure to water can lead to weakened nails, as they may become soft and more prone to breakage. When nails remain wet for prolonged periods, they can also develop issues such as peeling, splitting, and even infection due to changes in the surrounding skin's condition. Therefore, moderating water exposure, especially in combination with harsh detergents or chemicals, is vital for nail health.

In contrast, the act of moisturizing regularly is beneficial as it helps to hydrate both the nails and the surrounding skin, preventing dryness and brittleness. Using a professional nail file is also important, as it ensures the nails are shaped correctly without causing damage, contributing to overall nail health. Additionally, applying nail strengtheners can reinforce the nails, making them less susceptible to breaks and other issues. Thus, focusing on minimizing excess water exposure is crucial for maintaining healthy nails.