For flawless eyebrow adjusting and fixing, use brow mascara. containing microfibers that give your eyebrows the ideal density and appearance. has microfibers in it to make your eyebrows appear thicker. Propylene glycol to create a moisturizing and glossy appearance. Perfect application requires a precise brush. Ideal for light and extremely impoverished eyebrows as well. Use an application brush to apply to your eyebrows, working your way outward from the center of your face. Apply additional layers if necessary.