I have been a nail biter since I got pregnant with my first child 26 years ago. I've tried knocking the habit many many times over the years. I've tried several brands of similar products but not one worked until I tried this one. This stuff is amazing. It strengthened my nails and the taste of it was awful, so awful I learned not to even eat hand foods like berries and touch my lip by accident. Not one like this ever worked before. Over been using it about a month now and rarely catch myself lifting a finger to my lips and when I do I still quickly pull it away. I'll probably be totally habit free in the next few weeks. My nails look and feel fantastic. They are strong and thicker now. I'm totally in love with this stuff. If you're trying to stop this same nasty habit skip over the Sally Hansen and other ones and go for this brand. Save yourself wasting $$&&. 10 stars for this baby!