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Q&A(10)

Q: No where on the box or the strips does it say how long to leave it on. Why not?

submitted by Sandie - 4 years ago
  • A: On the front of the box it says to leave on for 30 minutes.

    submitted byDaisyMae27 - 4 years ago
  • A: Oops, it's on the actual foil packets and not on the front of the box! These work awesome!

    submitted byDaisyMae27 - 4 years ago

Q: My whitestrips are expired. Are they still ok to use?

submitted by Summer - 19 days ago
  • A: We do not recommend using expired Whitestrips. The whitening power may not be as effective as unexpired ones.

    submitted byCrest - 16 days ago
    Brand expert

Q: Can I still have my morning cup of coffee when I am in the treatment phase?

submitted by sgerl - 11 months ago
  • A: When wearing Whitestrips, do not eat or drink (with the exception of water) during your treatment. You do not need to wait to eat or drink after removing your Whitestrips.

    submitted byCrest - 11 months ago
    Brand expert

Q: Can you use them after brushing your teeth, if not how long must you wait, after brushing your teeth, to put the strips on?

submitted by Sandy - 1 year ago
  • A: Yes, you can brush your teeth after using our Whitestrips.

    submitted byCrest - 1 year ago
    Brand expert

Q: What is the peroxide strength

submitted by D - 2 years ago
  • A: Around 9.5%.

    submitted byCrest - 2 years ago
    Brand expert

Q: Are there nuts in this product

submitted by Marg - 4 years ago
  • A: There are no nuts in Crest Whitestrips, Marg.

    submitted byCrest - 4 years ago
    Brand expert

Q: I just ordered this. I understand there are 24 strips for a 12 days treatment. My question is, what is recommended in terms of how often one should do the treatment? One treatment every 6 months or once a year?

submitted by Ivan - 4 years ago
  • A: Our Whitestrips keep for 24 months, or two years, so we don’t recommend using one treatment a year. How often you apply is up to you! If you’re looking for big results on a schedule, you can use them daily or every other day. If you’re looking for more maintenance, you can do one treatment a month. Please feel free to give us a call at (800) 395-8423 if you have any further questions!

    submitted byCrest - 4 years ago
    Brand expert

Q: Can these strips be used if you have crown next to your two front teeth.

submitted by Lila - 5 years ago
  • A: Yes, they won't whiten your dental work though.

    submitted byCrest - 5 years ago
    Brand expert

Q: does it have mint flavoring?

submitted by tiffany - 5 years ago
  • A: No

    submitted byCrest - 5 years ago
    Brand expert

Q: does not indicate which is for upper or which is for lower or does it not matter? ones I have used in the past showed which is for which. Thank you.

submitted by annonimise - 6 years ago
  • A: The top Whitestrip is the longer one, and the bottom strip is shorter. You can use the top Whitestrip on your bottom teeth, but it may be helpful to know that the bottom arch of our teeth is smaller and curved more tightly, so the longer upper strips may not fit or adhere well.

    submitted byCrest - 6 years ago
    Brand expert

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