Principle: 460nm blue light shines light into the toenail causing the temperature of the nail plate to rise to 43 to 51, resulting in thermal damage and thus producing stunning effect. A toenail grows out in 12 to 18 months, so it is very important to stick to it for 7 minutes at a time, 2 times a day for 3 months and you will see a significant improvement. or HSA eligible solution for nail infections, helping to restore nail health and significantly improve symptoms such as nail deformation and painful walking. Keep your nails short. When trimming your toenails, cut them horizontally and keep toenails shorter than the ends of your toes. the nail clippers before using. To disinfect nail clippers, wash them with soap and water, then wipe them with alcohol. This is suitable for all types of people such as the elderly, children, people with liver and kidney insufficiency, or who are sensitive to pain. Purchase Notes 1.Before you use for the first time, please make sure it is fully . It is best to charge it for 90 minutes.2. Restore nail problems requires determination and persistence. Please on using it continuously, the short-term effect may not be obvious. Tip: This product has 4 lights, and 1 light is not visible, which is normal. Tips: The product may be updated constantly, The Actual Product May Have Slight Differences Or Color Differences the color and appearance may be changed, please don't mind. And take a consideration before place the order if you have request for color or appearance. Colour:Black Material:Plastic Package Contents: 1 x Care equipment for manicure Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.