Goof Proof Eyebrow Pencil Goof Proof Eyebrow Pencil Everyone's an eyebrow expert with the Benefit Cosmetics Goof Proof Eyebrow Pencil. Foolproof and fast, this super easy brow-filling and shaping pencil features a custom, non-sharpen goof-proof tip and a glide-on formula for effortless and quick brow filling. Now available in 12 shades, its natural-looking and soft color beautifully enhances the look of brows on the first swipe.. 2.75 - warm auburn. 12-hour waterproof formula. Includes a built-in blending spoolie-brush. 0.01 oz. Use the wide part of the custom goof-proof tip to fill and shape brows. Build color with a couple of strokes and use the pointed edge to define the tail of your brow while using the spoolie-brush to blend for natural effect. Refer to signature tips and tricks in packaging. BCOS-WU291. BM174. Founded in 1976 by a sister duo of San Francisco beauty lovers, Benefit seeks to bring laughter and fun to the world of cosmetics. Guided by the mantra makeup doesn't have to be serious to look good, Benefit's iconic products boast breakthrough formulas in loud, playful packaging, inspiring women all over the world to apply more lipstick, grab life by the giggles, and fake it 'til you make it.