Can I Use More than 2 Sets of Whitestrips a Day? Extensive clinical and consumer testing was done to establish the safety and efficacy of Crest 3D White .
According to Crest, you can use whitening strips up to twice every day. You should not brush your teeth before using whitening strips.
I made my list, checked it twice, and I can now say that professional teeth I've been doing a day Crest Whitestrips Challenge to whiten +.