I have only been using this for a week or so, but it has made a significant improvement! My nails aren't in that bad of shape, but a couple of them peel a little bit at the ends sometimes, and feel a bit soft. After a few days of using this on my nails, the peeling is definitely getting better and my nails feel a bit stronger.
It also works very well underneath my other nail polishes - it doesn't cause them to chip or shrink or anything. It dries quickly, and looks very shiny on the nail so it's perfect on it's own if you don't want to put another polish over top of it.
There isn't a lot of information about this product on the O.P.I. site, (there's more about the Nail Envy products), but I really like it and would definitely recommend it to others. It's really made a difference in my nails - they are almost perfect now, and I can imagine if I keep using this they will stay that way!
These reviews are the subjective opinions of ChickAdvisor members and not of ChickAdvisor Inc.