Our nail care phototherapist contains LED light beads, USB interface, plastic housing. It can use specific wavelengths of blue light to penetrate the surface of the nail and produce a photodynamic response to the keratin in the nail, helping to destroy microorganisms around the nail. Its use is simple: 1. Clean and dry hands and nails; 2. Use nail clippers to trim off excess nails. 3. Turn on the switch to activate the device and place the fingernail under the light for about 7 minutes; 4. Use it daily for better results. Do not leave electrical appliances working for a long time to avoid overheating. If any abnormality is found, repair or replace it in time.