While the Opalescence Go whitening trays are less concentrated than in-office treatments, they contain professional-grade gel. They are our strongest option, and while they work similarly to strips, they come in pre-filled trays that you bite down on.
“I prefer the tray format because they are easy to put on and take off, and I find them more comfortable to wear for long periods of time,” said Lindsay Schneider, editor at NBC Select. “Because they are so strong, my teeth can be a little sensitive when using them, but that’s true of almost all whitening products for me.
I’ve definitely seen changes with consistent use of these trays—my teeth are noticeably whiter.” I also really like these whitening trays, and I love that they come in a box that doubles as a dispenser.
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