Lemon Juice for Weak Nails
Leah (New York, Ny) on 03/13/2011:

Hi, I started putting apple cider vinegar on my nails and it has really kept them strong! I was very surprised. View Entire Thread
Rekha (Bangalore, India) on 06/04/2008:

Apply a little juice from a lemon to your finger nails every day. It makes them strong and they grow doubly fast! I was a compulsive nail biter since childhood and had very brittle nails. I kicked the habit and tried this remedy and now my nails are long and strong.