Wedding-day white teeth! My dentist actually told me about this. Use a little toothpaste, mix in one teaspoon baking soda plus one teaspoon of hydrogen peroxide, half a teaspoon water. Thoroughly mix then brush your teeth for two minutes. Remember to do it once a week until you have reached the results you want. Once your teeth are good and white, limit yourself to using the whitening treatment once every month or two.
From Pinterest-Teeth After being in dentistry for 20 years.. Let me tell you a cheap secret. All tooth whitening is made of peroxide. The gels run from 6 percent peroxide to 32 percent peroxide. If you swish with hydrogen peroxide everyday you will have the same results plus excellent gum tissue! As a dental hygienist, I recommend swishing with peroxide for 1-2 minutes morning and night to all my patients. It kills bacteria that causes decay, gingivitis, and periodontal disease.
Rethinking Oral Health Care: A Homemade Toothpaste Recipe for Tooth Remineralization