Let me just say that for my entire life I have had incredibly thin and weak nails. If they somehow miraculously grew to a decent length almost immediately they would break off on something or become even weaker due to sucking on them or biting them. I have ALWAYS been disgraced at my mess of nails. Enter OPI Nail Envy Strengthener. I was picking up some random supplies at a beauty shop, wandering over to the nail section to pick up a few colors and saw this. I thought, what the hell, and bought it. I have been using it for a little of a month and a half and almost IMMEDIATELY my nails were much, MUCH stronger! And had the ability to actually grow out! AND STAY THAT WAY! I mean, holy crap! That has NEVER EVER happened in my whole life! I've been so excited that I would rave about them to my mom (who has PERFECT nails might I add, they look like those individual color examples of nail polishes at stores, all real too!) and friends. Although it's not such a big deal, it was a huge thing for me. I would press on the longer grown nails and realize the difference from before: flimsy, ready to tear at any moment. To honest to goodness sturdy and healthy! I have tried many. and I do mean MANY times before to grow out and care for my nails with miserably failing results. As silly as it sounds over such a small thing, I am so happy and excited over this product, because after many attempts before I assumed I just would be doomed to short, stubby, peeling nails. As for the peeling mentioned by other users from this product? I haven't seen any of that! Perhaps they changed the formula? In any case, I mostly just use this as a base coat then apply nail polish and on top Sally Hansen Mega Shine (I think that's what it's called, which by the way gives an AMAZING shine and protection equivalent to a great professional manicure) and using that method has brought to where I am now.. Less than a MONTH AND A HALF later. Amazing.. just amazing. I recommend this to all. If you have any problems with the peeling then I suggest simply using it as a base coat then applying your color. That should take care of any issues, I promise.