Used only once. 【Multi-functional Beauty Device - One Device, Many Roles】 This is an upgraded, multi-functional beauty device that utilizes innovative technology. It combines all the desired functions into one device, including ion export, ion import, EMS microcurrent, eye care, cool mode, (red/scarlet/orange/blue) 4-color LED light, RF, hot and cold, and 3 types of vibration, for a total of 16 functions, providing a new sensation for your daily care! 【EMS Microcurrent, Ion, and 4-Color LED】 EMS microcurrent is applied to the face to slim the contours and achieve a smaller face. Ion import locks in beauty ingredients deep within the skin, providing moisture with high penetration, doubling the effect compared to hand application. Ion export removes dirt and improves skin tone. It also comes with 4-color LED, enhancing skin transparency. By accumulating 10 minutes of daily care every day, you can experience definite effects in 28 days. 【RF Radio Frequency - For Skin Texture】 When radio waves are emitted onto the skin, heat called Joule heat is generated, and the heat is transmitted to the deep stratum corneum of the skin, creating an environment suitable for treatment. With RF radio frequency of 1.5MHz or higher, the heat gently warms the skin from the inside, promoting the natural regeneration of the skin, and addressing fine lines, wrinkles, and sagging on the face, neck, and hands. The slightly warm treatment is very relaxing. 【USB Rechargeable, Portable, Lightweight】 USB rechargeable, it doesn't take up space and can be charged anywhere. It's almost as light as a smartphone, weighing only about 150g, compact and ultra-lightweight, making it convenient to carry. You can easily take care of your skin at home, on trips, business trips, and even overseas.