I could never seem to find a good liquid eyeliner until I started to use this product. I notice that this goes on very easily, it has a nice applicator brush (although the felt tip is very stiff, and that can be a little bit frustrating). The actual formula of this product is extremely dark, it's true to color. A lot of times in the past, the liquid eyeliners I had used before came out watery and turned more of a gray color. This liquid eyeliner comes out jet black, and stays on all day. It's necessary that you don't rub your eyes with this product on, or it will fade and smudge all over the place.