Guidelines for Using a Teeth Whitening Tray

Brush your teeth before and after each whitening session.
Place a small amount of whitening gel on the inner surface of the tray, applying it to each tooth that is to be whitened. Make sure the tray is completely dry before applying the gel.
For faster results, use the trays for 5–6 hours every other day. You may also sleep while wearing the trays, provided this is in accordance with your dentist’s instructions.
Avoid foods and drinks that contain strong pigments 30 minutes before and 30 minutes after whitening, such as coffee, cigarettes, red wine, soft drinks, fruit juices, etc.
Store the whitening gel in the refrigerator and keep the trays in their storage case, in a cool, dry and shaded place.
Mild tooth and/or gum sensitivity may occur and is considered normal. If you experience significant or persistent sensitivity, please contact your dentist.
Once you have achieved your desired result, a maintenance whitening session with the trays can be performed after an appropriate period of time to help maintain your preferred tooth shade.
A professional dental cleaning and polishing every six months is recommended to help maintain the appearance and colour of your teeth.
For optimal results, combining at-home whitening with professional in-office whitening is recommended.