It is used to apply darker shades on the outer corner for a more detailed look.[3] Fluffy blending brush - Usually blending brushes are made using natural bristles and is fluffy in appearance. It is used to blend out any harsh edges for a seamless effect. It works best with powder products because of the natural fibers.[3] Crease brush - This brush can be made either with natural or synthetic bristles and has a tapered cut to it.