Brushes for normal skin without (hyper-)sensitivity. Suitable for exfoliation - Resistance to UV radiation, anti-microbial, anti-static electricity, negative-ion. Anti-splashing brush skirt design: The peripheral skirt reduces water splashing during operation. Regular brush head cleaning with water is recommended. We recommend to frequently replace the brush head. - Push the brush head on the fixture on top of VisoClean and turn clockwise until it locks in place. - To remove turn the brush head counter-clockwise and pull it off.