Ideal for cleansing oily skin, large pores or hard to reach areas of the face, such as around the nose. The deep pore cleansing brush head is gentle enough for daily use. 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. We recommend that you remove the brush head weekly and clean with soap and warm water. Replace your Clarisonic brush head every 90 days. To mount the brush head, align with the 3 notches with the 3 pins on the handle, then push down and twist clockwise.