I am one of the few people who actually like this eyeliner. It stays put all day, does not smudge, and the application is a lot easier than liquid eyeliner. The shape of the pen is easy to work with as well.

However, I have one huge gripe about this eyeliner:
IT NEEDS TO LAST LONGER. I swear I can only get about 5-6 really solid applications with this liner.

It's a shame that it dries out so fast. Despite this, the product really works for me. It doesn't irritate my eyes at all.

WTF MAN -_-
This was pretty dang expensive for a drugstore product and the quality is complete poop :(
It hurt my eyes when i put it on becuase the tip was so rough and stiff! It didnt stay at all, and after one use.... NOTHING came out of it again. I was so disappointed and I glare at this product whenever i see it at walmart -_- waste of money :'(

Very stiff tip makes for application very harsh and painful. Dries very cakey/crackly and total smears.

not really a fan of stiff tipped liners. also I dont like the formula it gets shiny and cakey which makes it crack and rub off.

***EDIT, I ended up throwing it and I NEVER throw out products, even when i dont like them i still will use them up. But this was so bad that i couldnt get a clean line and then i would end up taking my makeup off and reapplying and I just didnt think that it was worth it.
When I said it cracks, I mean it peels off like plastic after only a few minutes of application.

I recently bought this eyeliner becuase of the it's supposed to last for 24 hours and I used it on my spring break trip to Germany where I didn't have time for touch ups. It stays on great, comes out in a nice inky black and it's easy to achieve a thin or thick line and it never smudges! Only bad part is that even if you keep the cap on all the time it dries out really fast like 2-3 weeks and that can get really expensive at 7 dollars a pen.

I didn't like this product at all. I usually put my eyeliner on my waterline anyways and this will not do that. It is like most marker-like liners, it just rubs on in a streak. Although you could use it as a top liner. If you don't mind the wet smudging still.

I'm surprised at the bad reviews. I really like the marker. I purchased dark brown & it allows me to make the perfect cat eye! It lasts throughout the day. I like that it's not too wet - which prevents smudges when applying. I will repurchase. continued >>

Dried out within 2-3 weeks. The brush was soft & the line was decent, but the color was very weak & wore off on my oily skin w/in 1/2 day. the pen itself could be great-they just need to improve the formula. I actually love E.L.F.'s marker, but it also dries out w/in a few weeks. continued >>

I bought this eyeliner on a whim and it's not the best but it's not the worse either. I like the felt applicator, it's not too stiff but not so flimsy either. The pigment was good at first but as i kept using it it started to fade and i had to do at least two layers or it'd be streaky. It last me through out the day if i put in on the top of my lid but wouldn't stay on the bottom (i've yet to find a good liner that will work on the bottom if you have suggestions please do give them :/)... other than that it's an alright liner but i don't think i'd buy it again. Can't remember how much it was sorry. :(

I had high hopes for this eyeliner to work well, but it was not pigmented at all. Waste of money.