BENEFIT COSMETICS Gimme Brow+ Volumizing Eyebrow Gel in 4.5 - Neutral Deep Brown This volumizing brow gel contains tiny microfibers that adhere to your skin and brow hairs, creating natural-looking fullness and definition. It’s also water-resistant and longwearing, which means you’ll never have to worry about touch ups. Simply stroke the brush tip along your brow to define, blend, and build your desired shape and thickness.