187 Duo Fibre Face Brush For All Formulas, Circular Shape, Two Fibres A large, full circular brush used for the lightweight application and blending of face powders or pigments that works especially well with Mineralize products. Use to create soft layers or add textures. Made from a soft blend of goat and synthetic fibres. M·A·C professional brushes are hand-sculpted and assembled using the finest quality materials. They feature wood handles and nickel-plated brass ferrules.