时间长了牙齿就不再那么洁白光亮，
这是因为牙齿的矿质结构发生了变化，
牙釉质受到腐蚀而出现了很多微孔。
抽烟、喝咖啡、红酒甚至是自来水的氟化物也能让牙齿变色。
如果你很在意牙齿颜色，那么可以尝试各种方法来美白牙齿，
包括美白牙膏、牙托、牙贴和美白笔。
如果这些方法都行不通，那么你还可以到牙医诊所美白牙齿。
![[CREST] 3D Whitestrips | 佳洁士美白牙贴 - 5 Treatments/10 Strip 5片10次](https://areyouwearingme.com/image/noeltan2001/image/cache/defaultlazyload-420x420.jpg)
SUITABLE FOR
All Skin Types
HOW TO USE
Do not brush your teeth before use（If you brush your teeth, use it after 30 minutes), brush or gargle after done use. For sensitive teeth with acidity, can paste the upper and lower strip separately. This will reduce the acidity of your teeth.
使用前不要刷牙（如果刷牙后要30分钟后才能使用），贴完后撕下再刷牙或者漱口。对于敏感型有酸感的牙齿，可以将上贴下贴分开来使用，即贴完下贴30分钟漱口再贴上贴，这样可以减轻牙齿的酸感哈。
Daily use with bright white toothpaste to extend the effect, or use the toothstripes after a period of time.
日常可以配合亮白牙膏使用，延长效果，或者过一段时间再使用牙贴。
SUITABLE FOR
ALL
HOW TO USE
Buried in the amount toothbrush, Clean the teeth by brushing
SUITABLE FOR
All
HOW TO USE
You can't interrupt or turn it off because he's just telling you to brush your teeth for at least 2-3 minutes to keep your mouth clean. when time comes, his lights will go out 按压2秒按键后，LED灯将会亮起。 LED 灯大约维持3分钟左右。