If you did your teeth whitening research, you know that hydrogen peroxide is much faster-acting than carbamide peroxide. So if you do chair-side whitening treatments, we highly recommend that you use hydrogen peroxide teeth whitening gel in order to achieve dramatic results quickly.We recommend our paint-on method when using hydrogen peroxide gel because it is much too strong to use in mouth trays where it would get on the gums.With the paint-on method, the gel is carefully applied directly to the teeth, avoiding the gums completely. Soft tissue is kept away from the teeth with the aid of a cheek retractor. The Advanced Whitening Kit is an example of a kit that utilizes this method. For home teeth whitening products, we recommend carbamide peroxide gel.