> Massager Feature :-1. Produce micro current by absorbing solar energy to activate cells, and promote the metabolisom of skin.2. The roller bolls designed by simulating the massage gesteures of beautician.3. You will not feel any pain at all. The two balls would not get you hurt but comfort muscle and skin effectively. Using it follow the direction of face, waist, leg, arm, breast and buttock, it can also slim fat and lift and shape the body! > Cautions Note before usage :-1. Take off the accessories such as necklace, earrings. 2. Piled up hair or firm them with hair band, to avoid hair entanglement, and the rolling will be more smooth. Use the hairpin for short hair. 3. Pay attention to the hair around the ears to avoid entanglement. 4. For dry or sensitive skin, please paint some lotion before usage.