Understanding what causes fingernail ridges and other symptoms ... (such as iron or zinc) if you have a deficiency Applying protein-containing clear nail polish that aims to strengthen the nails ...

However, this is unlikely to be the cause if all your nails are affected ... are more likely to be weak and fragile, rather than have long ridges. In some cases, longitudinal ridges are linked ...

People may also have ridges running the length of the ... professional to see if there is an underlying cause. However, Terry’s nails will not usually need treatment unless an underlying ...