eyeliner pen does not last runs out quickly [SEP] this product is waterproof but it just does not last i have only used it about five times and then it needs to be replaced it is 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 does not run or smudge but it is sort of a waste of money because you can only use it a couple times and then need to replace it too bad there was not a way to make the eyeliner pen last longer because it would be a good product otherwise i doubt i will purchase it again not worth it at all