What is the direct answer?
Philips Zoom NiteWhite 22 is carbamide-peroxide gel used in a dentist-made tray according to prescribed wear instructions.
What does this question mean?
The concentration and tray determine gel delivery to enamel.
What can you do next?
Use only the supplied amount and schedule, keep gel off gums, and never improvise wear time.
When should you seek dental care?
Examine cavities, cracks, gum inflammation, exposed roots, and sensitivity before whitening.
What should you ask the dentist?
Ask about tray fit, restorations, and what to do if sensitivity occurs.
Frequently asked questions
What changes the answer?
The concentration and tray determine gel delivery to enamel.
What is the first clinical step?
Use only the supplied amount and schedule, keep gel off gums, and never improvise wear time.

