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Whiten Your Teeth

Teeth whitening

Also called Yellow teeth, Stained teeth, Whiter teeth

3 min plan43 min with every studyUpdated Sep 27, 2026

Who it's forA man whose teeth look yellow or stained and who wants them whiter.

When to see a doctor
  • Unhealthy teeth or gums: decay, bleeding or sore gums are treated before any whitening.
  • One tooth that has turned gray or dark. The nerve may have died, and it needs a dentist.
  • Crowns, veneers, dentures or implants on the front teeth. Whitening only lightens natural teeth.
  • Sensitivity or pain that is still there after 4 weeks, or getting worse.
  • Sore gums, a sore throat or white patches on the gums that bother you after whitening.
  • Whitening offered by anyone who is not a dentist, hygienist or therapist.

I am not a doctor or a dentist. This is not medical advice. This is self-education. Every strength on this page is the one a trial or a label used, quoted from it. It is not a prescription. Talk to a dentist who has seen your teeth before any peroxide.