This is the worst. And I stupidly bought a mystery box that ended up having them, so I now have three useless Nail Rocks instead of one, when zero would be best. First off, there's no need to buy anything special. This is clear nail polish and craft store glitter. Second, it's clearly designed for girls who have never had to lift a finger for themselves in their lives. You will end up with bits of glitter in your food, on your clean plates, on your floor, stuck in your computer keyboard...EVERYWHERE. It's disgusting. And the instructions that tell you to dip your nails in will leave you absolutely covered and bumpy. Maybe you could make something look decent by just sprinkling a couple pieces on top of colored nails, but honestly, I don't have much faith. This is an utter waste of money and time, and it's a lie that it comes off with regular nail polish remover.