mac presents the Pro Brow Definer 1mm Tip Brow Pencil: a precise and sharp tool that draws in fine, hair-like strokes. Whether you prefer bold, natural or soft brows, know that the castor, argan and coconut oil-infused formula works to deliver an ultra-smooth and controlled finish. Even better, look to the other end to find a slender spoolie that helps achieve neat and well-groomed results by blending seamlessly.