What it is: A waterproof metallic eyeliner. What it does: Luster Liner’s silky-smooth, ultrasoft pencil glides on like liquid metal over the lash lines and inner corners of the eyes. The creamy, waterproof formula blends easily and won't crease, fade, or flakeeven after several hours. What else you need to know: "Use this velvety pencil as an liner, or to highlight the inner corner of your eyes."Anastasia Soare