This FDA grade silicone cleansing brush is specifically designed for all skin types, even sensitive skin. It is just as gentle as using your hands but more sanitary and effective. It has 5 different speeds that can be adjusted to your preference. It automatically shuts off after 3 minutes of use, our suggested amount of time needed to be effective. With its wireless charging and high quality battery, you can get 2 months of use after just 3 hours of charging.