Negative Positive
Title: Good for sensitive teeth
Review: I have sensitive teeth so wearing Crest white strips for 30 minutes makes my teeth ache very badly. However, this product is not too bad. It still gives me slight discomfort, but I am able to wear the product for up to 20 minutes without any issues. It says 5-minutes on the box, but you can do one treatment for up to 20 minutes if you have badly stained teeth. I don't; I just want whiter teeth! Anyway, I follow the directions with one EXCEPTION that I learned from MakeUpGeek.com: dry your teeth off with a tissue before you insert the tray. I learned that the gel would adhere better to dry teeth--works with my logic--and I have experienced good results. I don't do it twice a day, per the instructions, but even with once a day I have seen great improvement. I am actually afraid of doing it to the point where I get a mouth like Ross from Friends! Haha.
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