I have had problem nails forever, they are so thin that I can read through them, if they ever become long enough to do so. They tend to break as soon as they are longer than my fingers and bend easily. Lots of nail polished chip off because of the fact that they bend so easily. I tried Lizgy and have been using it for three weeks now, my nails are able to get a bit longer than normal and are stronger as long as I have the product on them. It says it can make flat nails curve and other things too which has not happened but I would buy it again and the price is good too. It's the best nail treatment I have tried in ages and the good is that it doesn't peel off, which so many of them do nowadays.