【How It Works】415nm blue light and 660nm Red light can penetrate the skin surface and be absorbed by the mitochondria in the cells, which improves the activity of mitochondria and releases more ATP, peroxidase, protein and other nutrients, which can increase cell metabolism and promote the repair of cell tissues. 【Why the USUIE】Do you have skin problems? USUIE light therapy device emits wavelengths of 415nm and a combination of 415nm and 660nm. It can be used for the skin repair, speeds up metabolism. It is helps you get your baby skin back! 【More Effective】USUIE light therapy device has 415nm dual chip and an additional 660nm red light chip, which has a better effect on skin repair compared to other products in the market. buy it now! 【Easy To Use】USUIE provides customers with an easy-to-use octopus holder, completely freeing your hands. Being small and light, it can be carried around in the storage bag that comes with it. TYPE-C charging interface, fully charged can be used 13 times, will not be affected by the charging cable, whether at work or at home, or in the outdoors, you can enjoy the light therapy anytime, anywhere! 【Best Gift Choice & Warranty】 The device helps users stay healthy with a beautiful product design and a variety of color styles to choose from. High-grade packaging, as the best gift for family and friends. If you require any further information, feel free to contact us. We will reply you within 24 hours. It can be returned for a full refund within 180 days of purchase.