The Maybelline Brow Inserts Brow Multiplying Tool is a dual-ended applicator designed to create fuller-looking brows. One side features a precise 0.015mm triple-tip pen that helps to draw natural, hair-like strokes, while the other is a fibre-infused gel that tints and visibly volumises individual brow hairs. The buildable formula delivers long-lasting definition, helping brows appear fuller for up to 36 hours. Available in six shades, the tool makes it easy to find your perfect match for seamless brow enhancement.