This is my favorite eye liner of all time. I use the color Espresso, which is a dark brown. It's easy to apply and stays on all day, and I have oily eyelids. I layer shadow over the liner for a deeper look. It's also got a sharpener on the bottom if you prefer a thinner line.
I have used this eyeliner for a few years, both in black and celadon. It goes on smoothly and doesn't clump or make big smudges. You have to be careful so that the end doesn't break off--you don't have to apply much pressure on it. I have tried most of the other brands and always come back to this one.
This product is good but I would say only for really young people/theater makeup/costumes or going out at night. I got this to use as a water line liner and was disappointed, too much glitter. I'm keeping it for parties but not really for every day use unless you're on the stage or David Bowie. :)