Pulling long Fashion Week days (and nights) has reminded us just how valuable long-wearing, waterproof eyeliner can be. Something that will. not. budge. Everyone on staff has a go-to pencil (we're only talking writing utensils here), but we're curious about which one is your personal favorite. So tell us in the comments: What's your stay-put pencil of choice, and why do you think it's such a winner?

Photo by Elizabeth Brockway.