Hello, cold light whitening teeth is a way to whiten teeth. Its principle: Cold-light tooth whitening technology is to transmit high-intensity blue light with wavelength between 480-520nm through optical fiber, and then remove all harmful ultraviolet rays and infrared rays through special optical treatment, and quickly produce redox effect through whitening agents such as hydrogen peroxide and silicon dioxide with diameter of 20nm. Remove the pigment attached to the surface and deep layer of upper and lower *** 16 teeth, so as to achieve the effect of whitening teeth.

Nanjing Ai He dentistry