What it is: A four-in-one brow defining and highlighting pencil for depth and dimension. What it does: This multitasking pencil features a lighter brow shade and a deeper brow shade to give your brows the depth and dimension you desire, plus an edge definer and arch highlighter to clean and shape your brows. The easy-to-blend formula wears for up to 24 hours (in an instrumental test on 20 women) and is waterproof, too (in an instrumental test on 22 women). Turn shapeless, flat brows into defined, contoured brows in an instant. How to use: Press down on the lighter shade tab and twist until you see product. Fill in the brow with the lighter shade from start to arch. To switch shades, just press down on the tab of your selected shade until it clicks into place, then twist for product. Next, fill in the brow with the deeper shade from arch to end. Then, stroke the definer below your brow from start to end and above your brow from arch to end. Blend gently. Finally, apply the highlighter beneath your arch and blend outward. Style Name: Benefit Brow Contour Pro Defining & Highlighting. Style Number: 5693984. Available in stores.