*In-Salon whitening treatment can be beneficial because it works very quickly. The whitening effect may also last longer. Often, you will only need only 20 minute for this treatment and few visits to get the best results to whiten your teeth. This is because the concentration of all natural and organic ingredients in the applied products is greater than in products you use at home. In-Salon treatments are recommended if you have receding gum or abfraction lesions as well.