I've been holding on to my sample of this for awhile, since I don't have the need for such dramatic eyeliner in my everyday lift. So I pull these out for Halloween, and I'm mostly disappointed.
The good part: it LOOKS great, as long as you're not looking too closely.
The bad part: it's uncomfortable to wear. Also, I can't get mine to stick well on the inside corner of my eye (this might be user error, but annoying nonetheless).
Bottom line: it might be a great option for a party (especially a costume party) where you're only trying to wear it for a few hours and no one is looking very closely.