Mac 132 Duo Fibre Foundation BrushnMacnQuantity: 1nA foundation brush designed to create a flawless look with an even finish. Works with any emollient formula, including Mineralize foundations and concealers. A blend of synthetic and natural fibres molded into a sturdy paddle shape, the thick, natural fibres allow for good pick-up and release, while synthetic fibres blend and diffuse product onto the skin for a soft look.