The ultrasonic cleansing brush repels 360 degree high-frequency vibration of various skin problems, dredges channels for pores, mildly does not hurt the skin, and has three-level cleansing functions to meet various skin needs,Ipx7 waterproof can be used safely even when bathing. It can be drenched without soaking.Level 1: gentle cleaning is suitable for sensitive skin or simple cleaning. Level 2: moderate cleaning is suitable for ordinary skin. It is suitable for cleaning daily makeup. Level 3: high cleaning and exfoliation is suitable for heavy makeup and excessive facial oil