"How do I whiten my teeth?" This is probably the single most common question I get in any given day at work. Regardless of age (in fact the older people get), everyone wants a whiter smile.
Whitening products are widely available and come in the form of mouthrinses, toothpastes and whitening gels. The active ingredient in all of the products is a form of hydrogen peroxide (carbomide peroxide) which breaks down to water and oxygen. It is the oxygenating activity that whitens the teeth. Mouthrinses and toothpastes have a low concentration of whitening agents and will help whiten the teeth gradually over time. Gels and strips are stronger products designed to whiten within a few days to a week depending on the concentration.
Please note that if you have dentures, white composite fillings or porcelain crowns/veneers, whitening products will not change the color of the teeth. Whitening treatments are effective on enamel only. More information on whitening available at: http://www.dentistry.net/cosmetic-dentistry/cosmetic-teeth-whitening-basics/