I give NYX Dual Eyeliner five stars. Doubling five stars. I used to use Cover Girl years and years and years their eyeliner and I thought that was the best thing out there but I got introduced to this and I was converted. It's way better mostly because it stays on way longer. Like halfway through the day I'm not like wiping underneath my eyes to get the black stuff off. Exercise, tears, whatever. It stays on way better than any other eyeliner. And then you also have the liquid eyeliner on the other side which I don't usually use but double the price you get double the product essentially but it's a better quality I think.