Take-home whitening systems can utilize the same concentration of peroxide but tend to have flavoring or fluoride added for improved taste and reduced sensitivity. For this choice, custom-fit whitening trays are made, and patients are sent home with the trays, whitening gel, and instructions.

Dispensing the solution into the trays and wearing them for up to 2-hours a day can get a similar result as in-office treatments, but it may take up to two weeks. Both in-office and at-home procedures are considered safe if done under the supervision of the dentist.