Extra gentle, for fragile and reactive skin. Extra-gentle and plush, the Clarisonic Delicate Brush Head is designed for delicate skin prone to irritation and dehydration. Compatible with all Clarisonic facial cleansing devices. Clarisonic Cleansing by the Numbers: 6X more makeup than manual cleansing. 300 Movements per second. 61% Greater absorbtion of Vitamin C after use. 2X daily use is proven safe and gentle. 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. For use with the CLARISONIC™ skin care brush. We cannot guarantee the efficacy, durability, or long term impact on the device itself, of brush heads not engineered by Clarisonic.