Opalescence’s whitening gel is professional-grade like its trays. Its main active ingredient is carbamide peroxide, and there’s also hydrogen peroxide in its formula.

WebMD looks at the many available teeth whitening systems, along with products like toothpastes and gels, and compares home kits to professional office treatments.

My top pick is the Opalescence Go, a set of gel-filled trays available in two strength options. If whitening strips are more your speed, the Crest 3D Whitestrips offer quick, mess-free results at ...

Burst’s whitening strips are created to gently brighten teeth while being gentle on gums. Their formula lifts coffee, wine, ...

Her dentist recommended these trays, which you leave on for about 30 minutes, because they’re made with a professional-grade, 10% hydrogen peroxide, minty gel.

Gel trays are among the most popular whitening methods. They involve custom or pre-formed trays filled with whitening gel, which are placed over the teeth for a specified period.

Are at-home teeth whitening products effective? Dentists explain how to shop for whitening strips, toothpaste and more from ...

Next up is the gels. “Whitening gels come in small syringes and are applied to the teeth using a brush or tray.The gel is left on for a specified amount of time, usually around 30 minutes, and ...