Eyeliner pen doesn't last, runs out quickly. [SEP] This product is waterproof BUT it just doesn't last.  I've only used it about five times and then it needs to be replaced.  It's like all the ink or coloring goes out of the felt pen.  I use it on the bottom of my eyes too, like in the wet line, and it works very nicely for that because it is waterproof and doesn't run or smudge, but it's sort of a waste of money because you can only use it a couple times and then need to replace it.  Too bad there wasn't a way to make the eyeliner pen last longer because it would be a good product otherwise.  I doubt I'll purchase it again.  Not worth it at all.