Absolutely the BEST eyeliner ever. It was easy to learn to use it the first time the lady showed it at the MAC counter. She did one eye and then I told her to watch me as I did the other. She watched and didn't even have to correct me because the application is that simple and goes on smooth but it also stays put. You do have to invest in the brush too. I did go ahead and purchase the corresponding MAC brush because I didn't have one at the time and didn't want to bother searching stores for a cheaper alternative. Both are worth buying though especially if you choose to keep buying the MAC Fluidline. It is totally worth it. You have more control over the process and the end result is more clean and professional looking! Would recommend completely! Also if you are concerned about the price, don't be...simply save all the empty containers and once you have six return them to the MAC counter and you can get a FREE lipstick or lip gloss. I always go with the lipstick. :)

I have been using this for years, really my favorite one. Its a little expensive but definitely worth it! Its long lasting and doesn't smudge. Love it !

I absolutely love this eyeliner. I received it for my birthday along with the brush. It is amazing and so easy to use. The liner does not smudge like all my other liners do. It also stays on forever! I have tested and bought like a million eye liner and they always smudge and then I got the point where I gave up on using liners because I hate it when it smudges. This MAC liner really saved me and love it!

This is my absolute favourite gel liner and I get the nicest lines over it. I go over it with a bit of liquid pen so,drives to make it pop and get some sharper lines, and if I accidentally sleep in it and am in a hurry it really doesn't wear off or smudge much so I just clean it up a bit and go

I love mac cosmetics the eyeliner is nice but I find that it is not black enough. However quality is nice!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

this gel liner is highly pigmented and goes on very smoothly! the jar is small but you get a lot more product than you think! ive been using mine everyday for 6 months now and im only about half way done! the only issue i have with this is that its not completely waterproof which kinda sucks because i have very watery eyes. but i highly recommend checking this out if youre in the market for a good gel liner!

Absolutely love this product, I reverted to using Mac and would never go back to any other brand. I find that this has the best staying power for my relatively watery eyes. I would deff recommend this.

I used to swear by this. I love "dip down" (which is a brown) for everyday and i use the "Backtrack" when I want to dress it up more. I find it stays relatively well but I also get racoon eyes if I yawn a few too many times or accidentally rub my eyes.

Love love love this eye liner! It is a bit of a splurge so I don't wear this every day... or i'd be homeless. Great colour, texture, and wears all day long.

I used to use this fluid liner when I was younger, it was super in style to wear very dark eye-liner and what not but I found with this product was that you needed the right brush for it or else it would come out a complete mess. It was okay for the first couple hours but coming home from a long day it would be all down my face. I am not a big fan of the size either because it is hard to use up all the liner before it dries up!