Benefit Cosmetics Precisely, My Brow Pencil Waterproof Eyebrow Definer

Full size. 
What it is: A bestselling, waterproof brow pencil that transforms shapeless, undefined brows with a few strokes—and wears for up to 12 hours without smudging.

What Else You Need to Know: Precisely, My Brow Pencil’s ultra-fine tip makes adding definition to brows easy. It lets you draw incredibly natural-looking, hair-like strokes. This rich formula is ideal for spot-filling sparse or over-tweezed areas, and the firm texture allows for precise application. It's now available in 12 shades to flatter every hair color.