Please tell me what are safe ways to whiten your teeth?

Whitening Products: Tooth whitening products, either otc or dentist administered, when used properly and in moderation, have been deemed safe.

Whitening teeth: Start with a professional cleaning and make sure you have no cavities or gum disease. Understand that fillings and crowns cannot be whitened. Crest whitestrips work moderately well but have some limitations. Your dentist can also make custom trays and supply you with a whitening gel to use to more effectively whiten your teeth. Other methods are available as well. Discuss with your own dentist.