It CosmeticsSuperhero Liquid Eyeliner Pen, Black - 24-Hour Waterproof Formula Won’t Smudge or Fade - With Peptides, Collagen, Biotin & Kaolin Clay - 0.03 fl oz

Easy to use. Has a built in fine line brush that gives a flawless, long lasting application. Remained intact while active outdoors in hot weather.

The best liquid eyeliner. Goes on smooth. Can make the line as thin or as thick as you like. Stays on all day, never smudges or runs. Removes easily with gentle makeup remover. Last a long time!

So easy to use. Liner glides on so smoothly and thin tip result looks really good. I’ve used IT products for years. Never disappointed.

The bristle of the eyeliner is flexible and allows smooth lines without them being jagged. Stays on all day.. having been using for years and have tried other options but this is is best

All I ever use is this brand . Goes on smooth, evenly, no tugging on eyelids

This eyeliner is a decent high end eyeliner, but it's not perfect. It smudges on my eyelids if I dont powder them or wear shadow underneath. Otherwise, it stays on pretty well. I find the formula to be similar to the Kat Von D Tattoo liner, very liquid and light. The application is easy, and though the pen is bulky for an eyeliner, the weight actually feels very good to stabilizing my hand when I'm drawing the line. Overall a decent liner but nothing special, so I probably won't purchase it again. I'm oily skinned, and so far my favorite liquid liners have been the Nyx Ink liner and the Stila Stay All Day marker liners.

I love the product itself and have been using it for years. You get crisp lines and it's a long lasting eyeliner. However, when I.T. changed the packaging to a slim version (previous version the top and bottom was more flared out), I noticed the pen runs out of liquid far quicker than the previous version and is also prone to leaks. I had to return 1 out of the 3 pens I bought due to a leaking issue. I find myself purchasing the product more frequently which I don't appreciate (likely the cartridge capacity shrank). If they can address the leaking issue that would be ideal. I recommend the pen itself but sometimes you may get a defective product.

Easy to use