How to Cure Ridges in Fingernails. Not only are nails a beauty statement--especially for women--but they also tell a lot about a person's overall health. If your nails are covered in unsightly, unhealthy ridges, you can take measures to heal your fingernails for better appearance and improved health.
Wear gloves to protect your fingernails when you work with dangerous chemicals or on rigorous manual projects--like construction or gardening. Protecting your nails prevents further damage from occurring.
Wait for your nails to grow out. Sometimes the only cure is time. In the meantime, coat your nails with a clear, protective polish to strengthen them while you wait for the ridges to disappear.
Buff your nails with an emery board. Use a fine board and treat your nails gently, working in only one direction (not back and forth) along the ridge itself. Just be careful not to press too hard on your nail, or you can cause further damage.
Apply a hydrating lotion several times a day to moisturize and strengthen your nails. Before bedtime, coat your nails with the lotion and put on a pair of cotton gloves to give your nails an intensive dose of moisture while you sleep.
Take a vitamin supplement that contains iron, zinc and B-12. Issues with fingernails are often related to nutritional deficiencies, so increasing your intake of key nutrients can help cure the ridges.