What it is: An easy-application, travel-size, waterproof liquid liner that stays on all day and night.What Else You Need to Know: This travel-size, easy-glide, quick-dry precision liner stays in place until you say when—no smudges, feathering, or running. The thin, marker-like tip is easy to use, even for the beauty beginner, and delivers any look—from a thin line to a bold, dramatic stroke.