减少皮肤黑色素的形成，具有美白的功效。
给牙齿做面膜也是比较流行的牙齿美白的方法。
To the teeth to do is mask the more popular methods of teeth whitening.
美白的程度因人而异，这取决于污点的数量和牙齿的自然颜色。
The degree of whitening will vary and may depend on the amount of staining and natural color of your teeth.
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