Custom whitening trays are trays that are clear and are usually made of a clear plastic that comfortably adjust when inserted. A small dollop of gel is inserted in each tray, giving them their whitening properties. The gel consists of a hydrogen peroxide solution that actively whitens the enamel of the teeth.
After they have been used and are taken off, they need to be cleaned with a cotton swab or a cloth and rinsed. This makes them ready to be used again. It is not suggested to use them for at least another day, after each application.
These whitening trays can be used several times to obtain the desired results. Our dentist can provide further advice on how many times they should be used in your case. Also, you can have them customize to you needs.