Remove excess makeup and residue while disinfecting and conditioning your brush bristles. The Brush Cleanser is convenient to use and specifically designed to extend the life of high-quality brushes while leaving them smelling fresh and clean. It also helps shorten drying time. How to use: Apply the cleanser directly to the brush or on a towel. Run the brush along a towel until it no longer distributes any makeup remnants. 7.9 oz. By M·A·C.