Build Volume, definition & texture in an instant with BBB London Brow Build Gel. This unique gel crème formula contains nano microfibres that mimic the appearance of abundant brow hair, creating the illusion of thicker, fuller-looking brows. BBB London Brow Build Gel works by quickly attaching itself to the brow hair with very little fuss, helping you fill sparse areas for instant volume & definition. It has been formulated for natural looking, matte finish. Its long-lasting formula ensures Brow Build Gel stays put all day (and all night). Vegan, cruelty-free.