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I love coffee so much that I think my teeth are gradually turning yellow. I'm a bit embarrassed when I smile now. I brush my teeth diligently, but I don't think it has anything to do with whitening.
For those who have tried teeth whitening, how long does the effect last? I can't give up coffee, haha. Honestly, I think I would still drink coffee even on the day of whitening treatmentㅜ I really can't stand it when I'm working in the office;;;
Does it have almost no durability?