What it is: A waterproof, smudge-proof, long-wearing liquid eyeliner with a specially designed, tapered 0.1 mm brush tip for extreme precision.What Else You Need to Know: Glide on sleek, ultra-pigmented lines with this waterproof liquid eyeliner. Designed for comfort, the tapered brush tip is made of ultra-fine and firm-yet-flexible bristles for a smooth, clean application that gets you precisely the look you want.