Benefit Cosmetics Precisely, My Brow Pencil Ultra Fine Shape and Define
With more than 3,000 5-star reviews, this waterproof Benefit Cosmetics Precisely, My Brow Pencil Ultra Fine Shape and Define ($14-$24) comes in 12 different shades so you can get a close colour-match to fill in sparse spots and then use the other end to blend it all in so brows look more defined (yet still natural).