130 Short Duo Fibre Brush For All Formulas, Flat-Topped, Two Fibres A short, round, flat-topped brush ideal for the smooth, easy application of foundations, creams, emulsions and select powder products, especially all Mineralize products. Use in a swirling motion for a sheer application of product. Features a blend of natural bristles 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.