I have been using this fluid line from Mac for ages now and it's the best thing out there. It is the only liner that says on for me and its so easy to use. My mother in law liked how it looked on me that I bought one for her as well and she's been using it for years now too. Best thing out in the market you have to try it!

First eyeliner that actually stays on for me. My eyes water easily, and all other eyeliners run or come off so easy. I first tried this about 7 years ago and i put it on about 4pm and it was still on the next day and it looked great still.

Love it.

I love my MAC Blacktrack Fluidline (Blitz and Glitz is just as great but just slightly softer than Blacktrack in terms of intensity colour). I only use gel liners and this is the best one I've tried....it's very long lasting, doesn't smudge throughout the day (although you can give it a bit of a smudged look while it's drying) and it's pretty much waterproof. I use this pretty much everyday and I apply it with a liner brush. It doesn't dry out quickly like the Smashbox gel liner either (which is smaller in size AND costs more than the MAC fluidline)......I can finish the whole fluidline without it drying out completely (although towards the end it does get a bit dry....but nothing major). Highly recommend and I'll always have this as a staple in my makeup bag

I love this product. It is really amazing for my eyes.

great colour and goes on super smooth, but as someone who has super oily eyelids this product does not last at all. also found it smudges very easily. if you're looking for an eyeliner you apply with a brush, go for Smashbox or Stila's smudge pot.

easy to apply,doesn't run,and doesnt feel too thick. love it :)

I wish that this were cheaper, because I would buy it ALL THE TIME! However, it's worth it. Mac Fluidline is the best eyeliner out there. I received this, with a Mac brush, from my best friend as a birthday gift, after telling her I needed eyeliner that STAYED.

And stay it does. This eyeliner goes on SO easily and smoothly, and lasts all day. They offer such a wide array of colours, and once you get the hang of your chosen brush, it takes only seconds to apply. The tiny glass jar lasts ages and ages, and Mac: thank you for the beauty and simplicity of its design.

This is my go to eyeliner. It may seem a bit overpriced, but it lasts a really long time. It stays put in summer which is hard to find in an eyeliner. Give it a try.

The item may be a little pricey versus others that are on the market, but this product quality is excellent.
It may take a few times to learn how to apply it correctly, by it you have a great brush, it shouldn't be a problem.
I've used the MAC Fluidline and gone to the gym, the item does not run! It says in place. I've bought 2 other jars since!

I will not use anything else, this goes on great.. stays on and in place for a long time and washes away easily