My fingernails are like paper and have vertical ripples, probably due to my thyroid condition. I have managed to grow them out a bit a couple of times, but they get chipped from the strings or they tear. As they get longer, they simply bend. What do you use to keep your nails strong? I have tried a few things, but to no avail. My current strategy is to put some hoof repair cream on them daily. Really. And I don't even own a horse!