I heart this eyeliner because it is only one that a makeup noob like me can apply with out making a mistake. It glides on very easy (it is creamy) and the color is very noticeable. I also like that it allows buildable thickness of the line. If you want a thinner less bold look, apply closer to the eye, lightly. If you want a thicker look, you just keep filling in from there.
I have this eyeliner in
Starry Night Sky: Almost navy blue, slightly lighter color,
Emerald: As indicated by the name, a very nice emerald green, bold color
Blackest Black: While not the blackest black liner you can get, it does the job great
Majestic Plum: Easily the worst that I have, the purple is way too faint and never really builds up to be opaque. I think there was a good reason why this color was discontinued.
It should be noted that the name of the product is deceiving, it makes you think that it is glimmery or glittery eyeliner when it is not. It in fact a matte eyeliner.