Specific Wavelengths: The 660nm red light and 850nm infrared light wavelengths have been shown in clinical trials to be helps for reducing the inflammation, redness and swelling associated with the cold sore. 660nm red light and 850nm infrared light wavelengths were chosen by cold sore device meaning they have therapeutic effects on different layers of the skin. This is a unique feature compared to other similar products with different wavelengths. Smart Display Technology:This red light cold sore treatment adopts the latest design ideas of 2022, cold sore machine with smart display, more convenient to use, the display shows the light therapy time, working mode, battery level, you can adjust the light therapy time and working mode according to your needs,support Type-c and Adapter two charging modes, convenient for you to use at home, office Separate Design: In order to be easy to carry and save storage space, we separate the front light guide bar from the operating handle, align it with the operating handle connection port when in use, and rotate it downward for installation, and rotate it left and right 360 degrees for ease of use, if you don't need to use it for a long time, you can rotate the front light guide bar upward for unloading. Time & Mode Settings: Unlike other cold sore infrared light our cold sore red light has Normal, Pulse, High three working modes, and supports 30S, 60S, 90S three kinds of light therapy time settings, in Normal and Pulse working mode support the light therapy time for 30S, 60S, 90S, in High working mode support the light therapy time for 30S and 60S. Cold Sore Treatment:Cold sore red light therapy being able toheal the sores quickly has helped regain confidence and ability to go out in daily activities without cold sore medicine,simply hold the light over the painful area for up to 3 minutes daily,Just 3 times, the blister is stopped cold in its tracks. Flattened and no longer tingly. And hardly breaks the lip surface.