Benefit Brows. 3D BROWtones adds subtle, natural-looking highlights to brows, bringing soft contrasts. - Enhances your natural brow colour - Wear alone or with your favorite brow pencil. - Custom spiral curved mess-free brush - Applies product evenly from root to tip a the comb tip for mess proof application How to use: Brush the formula through your brow hair, building colour as desired. Use the mini-comb tip to blend, shape and correct brows.