A tinted gel infused with fibers that fills & shapes, creating naturally fuller looking & defined brows.Create naturally fuller looking & defined brows with Revlon's ColorStay Brow Fiber Filler™. The tinted gel is infused with fibers that adhere to hairs for long-lasting volume & definition. Fill & shape your brows using the dual precise moulded brush for precise application to every hair. Waterproof, smudge & transfer proof.