Chantecaille's Waterproof Brow Definer is a dual-ended tool with a grooming brush on one end and an automatic pencil with a triangular tip on the other. This advanced formula combines the benefits of a waterproof brow pencil, wax, and powder to create naturally fuller-looking brows instantly. Avocado oil: nourishes brows. 0.0126 oz/0.36g. Available in Light Taupe.