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Insight Horizon Media

How long do you leave 22 carbamide peroxide on teeth?

Author

John Castro

Published Mar 12, 2026

How long do you leave 22 carbamide peroxide on teeth?

Then you receive a high-intensity substance (gel-like) called carbamide peroxide. It’s basically a take-home bleaching kit. You leave the trays in your mouth for 4 hours or so – some people leave them in overnight. If you’re a long sleeper, don’t worry!

How long do you leave zoom teeth whitening in?

A specially formulated hydrogen peroxide bleaching gel is then applied directly to your teeth. Your teeth are then exposed to the Zoom light, which activates the gel and penetrates the enamel to remove both surface and interior stains. The gel is left to work for 15 minutes before being removed and rinsed.

What happens if you leave teeth whitening gel on too long?

Leaving them on for too long can cause tooth sensitivity, gum irritation, and tooth damage. Your dentist can recommend the best whitening strips for your situation.

How do you use teeth whitening gel light?

Syringe a small amount of whitening gel on each tooth crevice on your gel tray. Place the trays in your mouth (top and bottom). Turn the LED light on and place it under your lips (so you don’t have to hold it). Leave the trays in your mouth for 30-60 minutes.

How long do you wear Zoom Nite White 22?

2-4 hours
Philips Zoom NiteWhite 22% Carbamide Peroxide delivers maximum results for patients who don’t mind a longer wear time or prefer whitening while they are sleeping. Wear time: Overnight or 2-4 hours daily.

Should you keep teeth whitening gel in the fridge?

Store trays in the tray holder and gel in cool dry place away from heat and direct sunlight. The gel may be refrigerated to prolong the shelf life, but do not freeze. You may expect some slight gum sensitivity from wearing the trays, and your teeth may feel very slightly sensitive.

Does Zoom whitening gel need to be refrigerated?

If sensitivity continues, try whitening every other day or ask your dentist for a lower-concentration gel. Avoid staining foods, drinks and tobacco for two hours after each treatment. Store any remaining whitening gel in a cool dry place for later use. There’s no need to refrigerate.

How long do you leave blue light on teeth?

The teeth are coated with the whitening solution, which contains either hydrogen peroxide or carbamide. An LED blue light is placed over the teeth and the solution is left in place for 30 to 60 minutes, or additional reapplications may be done.

Do I brush teeth after whitening?

We recommend that with any form of whitening that teeth are brushed beforehand. This is to ensure that any plaque (this sticky surface layer on your teeth) is removed and that any whitening agent present in the strips or gel gets the closest contact with the teeth.

How do you use NiteWhite 22?

Whitening Instructions for Philips: Zoom!

  1. Floss and brush hour teeth.
  2. Place a small “teardrop” amount of gel in each tooth compartment in the tray.
  3. Place the tray with the gel in the mouth.
  4. Keep away from the gums.
  5. Wear times are noted after step 6.
  6. After whitening, remove and rinse the trays with cold water.

How long does Philips Zoom Nite take to work?

Philips Zoom® DayWhite gel works for half an hour, and NiteWhite gel works overnight, or for two hours.