Whitening teeth cold light how long can be maintained

Whitening teeth cold light how long can be maintained and likes to choose the light of whitening teeth equipment and the hospital, in general, as long as the choice of the formal beauty plastic hospital, whitening teeth cold light can be quickly will ascend teeth 4 to 5 levels, and the effect of the whitening teeth also can maintain two years time, the effect is very significant.

　　原文翻译如下：

　　冷光美白牙齿可以保持多长时间

　　冷光美白牙齿可以保持多长时间与爱美者选择的冷光美白牙齿设备和医院有关，一般来说，只要爱美者选择了正规的整形美容医院，进行冷光美白牙齿可以迅速将牙齿提升4-5个色阶，而美白牙齿的效果也可以保持两年左右的时间，效果非常显著。

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