Yesterday I went to cvs and bought some whitening strips that were cvs brand. You hve to use them once everyday for 30 mins so last night I used them at 9 30 pm until 10pm. Do I have to use the whitening strips again today around that same time for the best results? Or could I just do it right in the morning?
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Yes you can use them at any time, however, I would recommend you to use them at least 6-8 hours apart to avoid teeth and gums sensitivity.
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