Deep Pore Cleansing Brush Heads use an advanced dual-action motion to effectively cleanse your normal to oily skin, large pores and those hard-to-reach or uneven areas of your face. Gentle enough for daily use. All CLARISONIC® brush heads are made from a non-porous, soft elastomeric material, resistant to bacterial attachment, and are precision-designed to oscillate bi-directionally at a sonic frequency of more than 300 movements per second. It is recommended that you remove the brush head weekly and clean with soap and warm water. Replace your CLARISONIC® brush head every 90 days. How to use: To mount the brush head, align the three notches with the three pins on the handle, then push down and twist clockwise. For best results, replace brush head every three months. By CLARISONIC®.