I don't hate it, but I feel like it could be way better. It's a pen, so it's nice and precise. But I feel like on its own, the color fades quickly. Plus, not to mention, it's not very pigmented to me, it says it's supposed to be black but it's pretty much a really dark grey.
I rarely use this on its own. I use this because it's easy to control to create a shape for my eyeliner, then I use the L.A. Colors liquid eyeliner to go over what I have done with this eyeliner.