Using teeth whitening strips causes adverse health consequences
the verdict
SUPPORTED
the evidence backs this
confidence 82/100
Multiple in vitro and clinical studies demonstrate that over-the-counter tooth whitening strips and peroxide-based agents can lead to adverse effects such as reduced enamel microhardness, increased surface roughness, and localized side effects like tooth sensitivity.
Evidence for · 4
Effect of Over-The-Counter Tooth-Whitening Products on Enamel Surface Roughness and Microhardness
2022 · cited by 11
Al-Rowis et al. (2022) found that over-the-counter peroxide whitening products significantly decreased enamel microhardness and altered surface roughness.
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More for · 3
Effects of online marketplace-sourced over-the-counter tooth whitening products on the colour, microhardness, and surface topography of enamel: an in vitro study
2024 · cited by 8
The in vitro study by Al-Khatib et al. (2024) demonstrated that marketplace-sourced over-the-counter whitening products caused measurable microhardness reduction and severe topographical alterations to enamel.
In vitro evaluation of an experimental copaiba oil-resin gel associated with 35% hydrogen peroxide bleaching on bovine enamel.
2026 · cited by 1
Silva et al. (2026) note that teeth whitening procedures can cause tooth sensitivity and enamel damage.
Efficacy and safety of low-concentration whitestrips for extrinsic tooth discoloration: a randomized controlled trial.
2026 · cited by 0
A randomized controlled trial by Li et al. (2026) evaluated low-concentration whitestrips and reported adverse events (AEs) occurring during the whitening process, though well-tolerated overall.