M·A·C Brush Cleanser Removes excess makeup and residue while disinfecting and conditioning the bristles. This one product will clean, disinfect and condition the brush fibers so that brushes will last longer. It is convenient to use and is specifically designed to extend the life of high quality brushes. Brush Cleanser leaves your brushes smelling fresh and clean, and helps shorten their drying time. M·A·C Brush Cleanser $9.00 item # price: 10874U $9.00 This works for me. Sometimes i will use just a mild soap and water. How about you? what do you clean your brushes with ?