Bite’s whitening gel cuts out the need for the tray, as you can brush the gel directly on to your teeth. Compared to the Opalescence Go Kit, this one is a little messier and labor-intensive to use.

Dr. Joyce trusts Opalescence teeth whitening in her practice and Opalescence Go prefilled trays are an at-home option she finds successful for many of her patients. The trays are designed for ...