Benefit Precisely My Brow Detailer Pencil is ultra-fine (0.8mm) brow pencil delivers hair-thin strokes for a flawlessly defined look. Its firm yet smooth tip glides on effortlessly, allowing for precise application and natural-looking buildable color. Blend to perfection for brows that are both beautiful and believable. Benefits: Tiniest brow pencil tip out there (yep, we checked) 12-hour wear Waterproof & smudge-proof Built-in blending spoolie Protective retraction technology keeps the delicate tip safe