If you're a no-makeup-makeup person, but you want to define your eyes, this fine-tipped marker is for you. Use the liner to fill in the gaps between your lashes for an effect that's barely noticeable but definitely something.
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.