What it is: A convenient, high-value duo of brush heads for the Clarisonic Cleansing System. What it does: Perfect for exfoliating skin, shaving prep, and for use on the d¨¦collet¨¦ and body, these brush heads do it all. All Clarisonic brush heads are made from a nonporous, soft elastomeric material, resistant to bacterial attachment. All brush heads are precision-designed to oscillate bi-directionally at a sonic frequency. This set contains: - 2 x Brush Heads What else you need to know: Replace your Clarisonic brush head every 90 days. Suggested Usage: -To mount the brush head, align the three notches with the three pins on the handle, then push down and twist clockwise. -Remove the brush head weekly, and clean with soap and warm water