All peroxide gels work by forming hydrogen peroxide as their end product. Hydrogen peroxide breaks down to water, oxygen, and numerous radicals and byproducts known as “bleaching factors” that lighten teeth.
Optimum whitening results are achieved only when these whitening gels are: fully potent; chemically influenced to produce a high percentage of free radicals (instead of simply oxygen and water); and are allowed extended time for these factors to diffuse thoroughly into the microstructure of teeth.