The Soniclear Face Brush Replacement Head for the Daily Cleanse Brush is designed for gentle yet thorough daily face cleansing of all skin types. Removes dirt, sweat, makeup and oil and unclogs pores. The inventors of Soniclear recognized that skin cells and moisture remaining on the brush heads between uses can create conditions for bacteria to grow. So all Soniclear brush bristles, the base to which the bristles are attached and the protective cap are treated during the manufacturing process with proprietary Life antimicrobial product protection (a Soniclear exclusive) to guard against the growth of stain- and odor-causing bacteria. Traditional skin cleansing systems do not provide this protection.