The Snow Teeth Whitening All-in-One At Home System uses a proprietary, sensitivity-free serum to give you professional quality whitening results at home— no expensive dentist appointments required. This system erases even the most stubborn stains with an effective carbamide and hydrogen peroxide formula enhanced by LED-activated technology, while still remaining safe enough to be used with dental work like crowns, veneers, and braces. The LED is set to a specific, completely harmless wavelength that activates the ingredients in the whitening serum to quickly and efficiently break down years of stains without hurting the enamel.All it takes is 4 easy steps: Brush your teeth for two minutes using circular motions. When finished, floss and rinse.Twist up the wand and apply the professional grade whitening serum to each tooth.Once the serum has been applied, plug the LED mouthpiece into your smartphone or other USB power source, and put in the mouthpiece. After 10-30 minutes, unplug and remove the light from your mouth. Rinse both the light and your mouth, and voilà! Gorgeous pearly whites that will give you something to smile about.