WHITENING
Clinical trials for WHITENING explained in plain language.
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Colgate vs crest: which toothpaste whitens teeth faster?
Symptom relief CompletedThis study compared a Colgate toothpaste containing 5% hydrogen peroxide and fluoride to a toothpaste without hydrogen peroxide to see which whitens teeth more over one week. Eighty healthy adults aged 18 to 70 with at least moderately dark teeth brushed with one of the two tooth…
Matched conditions: WHITENING
Phase: PHASE3 • Sponsor: Colgate Palmolive • Aim: Symptom relief
Last updated May 14, 2026 12:02 UTC
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Toothpaste showdown: hydrogen peroxide vs. regular fluoride for stain removal
Symptom relief CompletedThis study compared a toothpaste with hydrogen peroxide to a regular fluoride toothpaste for removing surface tooth stains after a single brushing. It involved 80 healthy adults aged 18-70 with visible stains. Researchers measured stain levels before and after brushing to see whi…
Matched conditions: WHITENING
Phase: PHASE3 • Sponsor: Colgate Palmolive • Aim: Symptom relief
Last updated May 13, 2026 16:02 UTC