Whitening toothpastes are generally not worth paying much more than your normal brand. All toothpastes can be marketed as whitening because they all remove stain. The better whitening tooth pastes may have a small advantage over the standard formulations. They are good at helping to maintain results but offer less scope to provide the noticeable change that most people want.
Over the counter kits from high street retailers.
The law means that the active chemical in these products is at low concentrations. In our opinion they fail to achieve the results that patients are looking for.