Jackdblack (Madison, Wisconsin, USA) on 12/23/2014:

I have checked the posts here but I have not seen garlic. You see, my mom used to rub our nails with peeled, raw garlic everyday. She said that her mother used to do the same to her and it made her nails stronger.
When I was a young kid I had thin, weak toenails that bend on their own when they grew longer. My mom's garlic remedy paid off as my nails became thick and stronger. I want to share this home remedy as it might work for you too!