My teeth are slightly yellow and I have been using Crest teeth whitening strip for a week but I can not tell any difference. Can anyone tell me something really good to use without having to get them professionally whitened? I need something I can use at home other than whitening toothpaste and Crest white strips. Thanks!
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baking soda and/or h2o2 (hydrogen peroxide) just a small amount on your toothbrush of each. do not combine !
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