Diorshow On-Set Brow Mascara is an eyebrow mascara from Dior. It is designed to shape, color and fix the brows, giving a natural, defined look. It has a brush with a unique shape that should make it easy to apply the mascara and create a volumizing effect. It should also keep the brows in place and give them a more defined look. It is available in several shades to match different hair colors.