Contains no actual liquid eyeliner. A glorified, dried-up marker :/ [SEP] Yes, this product causes irritation - it made me QUITE irritable the first time I used it.<br /><br />First off, this is not a liquid eyeliner pen. There is no liquid eyeliner in it whatsoever.<br /><br />It is, in essence, a glorified, dried-up marker - not even a sharpie - more like the cheap markers that come with the coloring pages at Walgreens or the dollar stores. I'm not knocking E.L.F. but this is quite sub-par. I'd be miffed if I hadn't gotten it on sale for like $1.86.<br /><br />The 'marker' tip actually retreats into the pen itself when you press with any pressure whatsoever, which is awkward and you have to then pull it back out and just hope it doesnt keep happening.<br /><br />Not easy to apply. Mostly because it's not easy to apply dried up ink from a cheap marker tip, to your (slightly moist) eye lid area!<br /><br />I was not able to achieve any type of dramatic, dark eye liner with this pen. It looked like i had tried to put it on with a ... you guessed it, dried up marker. :)<br /><br />You shake the pen and hear nothing, because there is nothing in there to be mixed by the shaking. It is literally just a dried up marker.<br /><br />It is, however, just as waterproof as a dying Sharpie.