Benefit Cosmetics' Precisely, My Brow Eyebrow Pencil is an ultra-fine eyebrow-defining pencil. It comes in a waterproof formula that lasts up to 12 hours.Fill the brows with small, hair-like strokes of color, then soften and blend the color out with the built-in spoolie brush. Once dry, the color sets for a natural and smudge-proof look.This brow pencil also features in our 10 Makeup Tips for Mature Skin! Or, learn how to use it to create perfect brows every time on our blog!