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the claim

Hydrogen peroxide in tooth whitening products removes stains and lightens tooth shade.

the verdict
SUPPORTED
the evidence backs this
Recorded sources
8 sources for · 0 against

Counts group repeated records of the same source within each side. They do not measure evidence strength or source independence.

Is it true that hydrogen peroxide in tooth whitening products removes stains and lightens tooth shade?

Yes. Multiple reference and peer-reviewed sources state that hydrogen peroxide is the active whitening agent in tooth whitening products, oxidizing pigment molecules to lighten tooth shade, and clinical studies report measurable whitening from hydrogen peroxide products.

Verdict: SUPPORTED · 8 sources for, 0 against · Last checked

The private library was unavailable for some searches in this check. Missing library results are not evidence against the claim.

Evidence for · 8
Tooth whitening
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Tooth whitening. (n.d.). en.wikipedia.org. https://en.wikipedia.org/wiki/Tooth_whitening

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More for · 7
Hydrogen peroxide
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Hydrogen peroxide. (n.d.). en.wikipedia.org. https://en.wikipedia.org/wiki/Hydrogen_peroxide

Clinical study on whitening effects and tooth sensitivity of home-whitening agents containing 6% hydrogen peroxide
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Clinical study on whitening effects and tooth sensitivity of home-whitening agents containing 6% hydrogen peroxide. (n.d.). cir.nii.ac.jp. https://doi.org/10.4012/dmj.2025-119

Bright Smiles, Hidden Dangers: A Literature Review on the Potential Side Effects of Peroxide Based Over-The-Counter Teeth Whitening Treatments
2024
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Bright Smiles, Hidden Dangers: A Literature Review on the Potential Side Effects of Peroxide Based Over-The-Counter Teeth Whitening Treatments. (2024). doi.org. https://doi.org/10.52403/ijrr.20240425

Evaluation of the Effectiveness of Different Types of Professional Tooth Whitening: A Systematic Review.
2024
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A, B., C, M., G, R., S, C., & GM, N. (2024). Evaluation of the Effectiveness of Different Types of Professional Tooth Whitening: A Systematic Review.. doi.org. https://doi.org/10.3390/bioengineering11121178

Tooth Whitening: What We Now Know -
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Tooth Whitening: What We Now Know - PMC Lock. (n.d.). pmc.ncbi.nlm.nih.gov. https://doi.org/10.1016/j.jebdp.2014.02.006

In vitro evaluation of the whitening effect of mouth rinses containing hydrogen peroxide
2012
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Lima, F. G., Rotta, T. A., Penso, S., Meireles, S. S., & Demarco, F. F. (2012). In vitro evaluation of the whitening effect of mouth rinses containing hydrogen peroxide. doi.org. https://doi.org/10.1590/s1806-83242012000300014

Comparison of Two Home-based Chemically-induced Teeth Whitening in Adults: A Randomised Clinical Trial
2022
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Santos, J. S. G. D., Silva, K. Y. D. S. E., Felix, L. H. D. P., Dias, M. F., Filho, P. C. L., & Silva, C. H. V. D. (2022). Comparison of Two Home-based Chemically-induced Teeth Whitening in Adults: A Randomised Clinical Trial. doi.org. https://doi.org/10.7860/jcdr/2022/53020.16351

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