This marker's fine tip makes it easy to control, yet it's buildable -- so if you want to thicken up the line or add a flick at the end, you can. You can also control the color depending on how much pressure you use -- a light hand will create a dark gray effect while firmer application gives you a solid black line.
On one end, there's a baby-fine marker that's perfect for drawing precise lines around your tear ducts on between your lashes. On the other end, there's a brush-like tip for feathery wings. The formula is inky and extra black, and of course there's the Tom Ford factor that makes this liner impossibly chic.
This calligraphy pen-inspired tip is perfect for creating a cool, graphic look. The slant allows you to easily draw squared-off, straight edges and shapes. (Note: While the pen simplifies things, these techniques are not for the makeup novice. You'll need a steady hand and an eye for symmetry to get a look like this right.)
If liquid eyeliner is generally too severe for you, choose one with a tapered, cone-like point -- you'll get a diffused line. This marker is also blendable while it's still wet, so it's the ideal base for a smoky eye -- you can layer powdered shadows right on top.
If you want to draw a line that's thick on your lid but tapers off to a thin line by your temples, this marker will do the trick. Hold it at an angle to draw a wide line, or apply it at a 90-degree angle to your face to create a thin mark using just the point of the pen.