Wash your brushes at least every couple of weeks. Use a mild soap (like baby wash or a mild hand soap) and water. Wet your brushes and rinse under slow running water. Add a small amount of soap and water to your hand and swirl the brush around in the soapy water. Rise and repeat the process until the water rinsed from the brush is clear. Squeeze out excess water, reshape and lay the brushes on a flat surface and let the brushes air dry.