Define, fill and fix brows with Brow this way Fill & Sculpt Brow Definer. Double ended eyebrow definer with a precise triangular tip and a spoolie brush to blend easily and define intense natural-looking brows. Last 12Hrs, and does not transfer or fade. When you want perfected and sculpted brows and get a wow eye look. For those who want instantly fuller, defined yet natural-looking eyebrows.