Whether they break, split, have ridges or have been subjected to acrylics, weak nails are not a pretty sight. It's difficult to keep polish on nails that flake or break easily, but there is hope. One major cause of weak nails is wetting nails. Frequent handwashers often complain about having weak nails, as do those who are exposed to detergents or other harsh chemicals. Hormone fluctuations can cause them as...