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QUESTION DETAILS

how much hydrogen peroxide does 1 hour express crest 3D teeth whitening has?

Asked more than five years ago by Davin

It's hard to tell from the label or the box.

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 ANSWER

The exact amounts of specific ingredients are never listed - to keep trade secrets. What we can tell you is that the hydrogen peroxide used is a 9% concentration - which is high for standard whitening kits - most have perxide in the 5-8% range.

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