Thickening tinted eyebrow mascara. Take your brows to new heights with THICK IT. STICK IT! ™ BROW GEL from NYX Professional Makeup. Made with plant-origin fibers, this buildable, tinted eyebrow gel tames and thickens arches with a natural finish that lasts up to 16 hours. The vegan formula is available in eight inclusive, high-impact shades to complement an array of hair colors from blonde to black. Upgrade your brows from thick to thicker to thickest for a one-and-done experience.