[Expired]Crest 3D White Professional Effects Whitestrips 20 Treatments + Crest 3D White 1 Hour Express Whitestrips 2 Treatments - Teeth Whitening Kit

回复 @KittyDoggy : I agree. If used every day, the teeth feel a bit sore, and it might affect eating. Using it 2-3 times a week seems reasonable. 我觉得也是，每天用的话牙齿总是酸酸的会影响进食吧，一周用个2-3次差不多

回复 @匿名用户 : I've only used it twice 😂. The manual says to use it every day, but I feel a sour sensation and think using it daily might not be good. 我才用了两次😂，说明书上说每天用，但我觉得有酸的感觉每天都用不太好