The TouchBeauty SONIC FACIAL CLEANSER 1788 is made of food-grade silicone, which is probably the most gentle material for the skin. In addition to cleansing your skin, it also massages your face, thereby promoting blood circulation and helping to keep your skin beautiful and fresh. The IPX6 waterproof rating ensures that you can use the brush even in the shower. Thanks to the automatic timer, it will turn itself off after 90 seconds to protect your skin from potential damage. The combination of an integrated battery and USB charging adds to the convenience while providing a greener option to devices that use standard batteries.