Fully charge the handheld controller before first use. Using the velcro bands, attach the straps to the side of the mask and insert the eye shields. Plug the cable into the port of the handheld controller. Cleanse your skin and dry with a towel. Hold the mask close to your face to position for best fit. Using the straps, fasten the velcro at the back of your head. You can adjust the bands to ensure a snug fit. You want to ensure that the eye shields are secure to your face to prevent light leak. Press and hold the power button for 2 seconds to turn on the mask. Press the power button to select a different mode and use the time selection button to choose your treatment time. You can select 10, 20 or 30 minutes. When the time has elapsed, the device will switch itself off. If you want to turn off the device during the process , hold the power button for 2 seconds. Finish your skincare routine with a sheet mask, serum, moisturiser or oil. Repeat 3-5 times per week for the best results.