Some people know teeth whitening products sells in where to having? Shanghai has buy?

Teeth whitening, tooth whitening products a lot of, but not choose the time to blindly choose teeth whitening, tooth whitening, daily tooth whitening method: pay attention to clean, clean the teeth can effectively prevent teeth restain, can also be in the professional guidance to further the use of professional teeth whitening products, like a the United States of America Proulx Witt whitening teeth is more professional, but in China there is no universal, more difficult to buy, there are popular in Europe and the United States, the effect is also accepted. Teeth whitening, in addition, in the early in the evening to brush your teeth, to keep the mouth clean. Extrinsic tooth surface color is due to the existence of a variety of bacteria, which secrete sticky substances a lot, teeth whitening, the daily diet of tea scale, smoke stains and the absorption of certain minerals in drinking water in the adhesive material, the teeth gradually turn yellow or black.

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