I recently went and bought myself an essence 2 in 1 eyeliner. What I like about this product is that you have two options. One side is a thick line and the other is a very fine line. I also like fact that it is not a pencil so you do not have to bother sharpening it and it is not a roll up stick so you do not have to worry about breaking it. It is almost like a fine liner pen for your eyes which is a really cool concept. It is super easy to use because it allows you to be consistent. The pencil has a liquid finish so it looks really slick once it is applied.
I only had two slight issues with this product. The first was that for some reason I found it very easy to smudge, almost as if the product did not dry completely. The second was that I found the product ran out very easily which was a bit of a pain. However, I still think it is a really good product because of how easy it is to use. I would still choose this pen over a brush application any day. I just think next time I use it, I will pat the line down with some eye shadow just to ensure it sticks extra well.