I have the worst nails. They split if you look at them funny. On a whim I decided to try this. I am floored how amazing it works. I used this for two weeks without polish and my nails are stronger and they haven't peeled or split. I use this as a base coat now before covering it with polish. Since I started putting polish over it I haven't even had any chips for days even with cheap polish. It's a little pricey at $10 for a small bottle but to me it's worth it.