The short answer: Yes, but only on surface stains. In clinical trials lasting at least six weeks, nearly all whitening toothpastes removed more stain from coffee, tea and tobacco than regular toothpaste. They can’t change the natural color inside your teeth the way peroxide bleaching does, toothpastes with blue covarine give a temporary optical boost, and whitening strips work better. Choose one with fluoride and expect modest results.
Teeth can look darker for two different reasons. Extrinsic stains are colored compounds that build up on the enamel surface from tobacco, food and drinks. Intrinsic discoloration sits inside the tooth, in the enamel or the dentin beneath it, and comes from aging, fluorosis, tetracycline antibiotics or genetic conditions (American Dental Association, 2022).
Whitening toothpastes are built for the first kind. This article explains how they work, what the clinical trials show, whether they’re safe for enamel and fillings, and when another whitening option makes more sense.
How does whitening toothpaste work?
Whitening toothpastes rely mainly on mild abrasives to scrub away surface stains, and some also contain low levels of peroxide (American Dental Association, 2022). Most combine several approaches.
Abrasives
Ingredients such as hydrated silica and calcium carbonate polish the enamel surface and physically remove stains (American Dental Association, 2026). Whitening toothpastes are designed to do this without being unduly abrasive (Joiner, 2010).
Chemical stain removers
Some products add ingredients such as sodium hexametaphosphate, pyrophosphates, citrate, enzymes or low levels of peroxide, which help loosen stains or stop new ones from forming (Joiner, 2010). The peroxide in a toothpaste is at a much lower level than in bleaching gels and is in contact with the teeth only briefly. Changing the color inside a tooth takes a peroxide gel that diffuses into the tooth and reacts with the stain molecules there (Kwon & Wertz, 2015).
Blue covarine and “purple” toothpastes
Blue covarine is a blue pigment that leaves a thin film on the teeth, making them look less yellow. In a manufacturer-run crossover trial of 66 adults, toothpastes with blue covarine increased measured whiteness and reduced yellowness straight after a single brushing, more than a regular silica toothpaste did (Zhang et al., 2025). The effect is optical, so it fades.
Purple “color-correcting” gels sold online are marketed on the same idea, that a purple tint cancels out yellow. We could not find clinical trials of them. In one small laboratory study on acid-softened enamel, a fluoride toothpaste preserved the enamel surface better than a color-correcting gel did (Buruiana & Ghisman, 2025).
Does whitening toothpaste actually work?
For surface stains, yes. A 2018 systematic review pooled 32 comparisons from 21 studies of adults who used a whitening or regular toothpaste for at least six weeks. Nearly every whitening toothpaste reduced stain more than regular toothpaste, whether or not it contained an added chemical stain remover. Stain area on the Lobene index, a standard dental stain score, fell by 0.44 points more with whitening toothpaste (95% confidence interval 0.34 to 0.55) (Soeteman et al., 2018).
A 2025 update of 14 randomized trials reached the same conclusion, and found that toothpastes with added chemical agents removed more stain. The studies varied a lot, and the authors said long-term effects still need study (Hajisadeghi et al., 2025).
How much whiter will my teeth look?
Modestly. Another meta-analysis found that, measured against a dentist’s shade guide, whitening toothpastes lightened teeth by about 1.8 shade tabs more than regular toothpaste (95% confidence interval 1.3 to 2.3). They worked about as well as paint-on whitening gels and less well than whitening strips, and the evidence was rated low to moderate quality (Devila et al., 2020).
What whitening toothpaste can’t do
Whitening toothpastes don’t change the natural color of your teeth. Intrinsic discoloration from aging, fluorosis or tetracycline needs a peroxide bleaching product (American Dental Association, 2022). Crowns, veneers and tooth-colored fillings won’t change color either, which can leave them looking different from the natural teeth around them after any whitening (American Dental Association, 2022).
Is whitening toothpaste bad for your enamel?
Not when used as directed. According to the American Dental Association (ADA), brushing with proper technique and a toothpaste with a relative dentin abrasivity (RDA) of 250 or less causes limited wear to dentin and virtually no wear to enamel, and every toothpaste with the ADA Seal must meet that limit (American Dental Association, 2026).
Side effects are more common than with regular toothpaste, though. In the pooled trials, whitening toothpastes were linked with a higher risk of adverse effects (risk ratio 1.74; 95% confidence interval 1.20 to 2.52) (Devila et al., 2020). If your teeth become sensitive, switching back is a reasonable first step, and our guide to sensitive teeth explains what else helps.
Fillings, crowns and veneers
Laboratory studies suggest whitening toothpastes can roughen the surface of tooth-colored composite fillings (Yıldızoğlu et al., 2026) and some ceramic crown materials (Geduk & Sağlam, 2024) over time, which may make them pick up stain more easily. These were simulations, not studies in people’s mouths, but if you have a lot of cosmetic dental work it’s worth asking your dentist which toothpaste they suggest.
Whitening toothpaste vs. strips and bleaching
If you want a noticeable color change, toothpaste is the weakest option. Whitening strips outperformed whitening toothpastes in head-to-head trials (Devila et al., 2020). An economic analysis of eight randomized trials found that at-home bleaching with 10% carbamide peroxide gave the most whitening for the money, and that in the US, blue covarine and hydrogen peroxide toothpastes cost more without whitening teeth more than a regular toothpaste (Santos et al., 2024).
Bleaching has trade-offs, mainly temporary sensitivity, which the ADA says can affect up to two-thirds of people early in treatment (American Dental Association, 2022). Our guide to teeth whitening options and safety compares in-office, tray and strip whitening.
What about charcoal toothpaste?
The ADA says there is insufficient evidence that charcoal-based products provide a measurable whitening benefit (American Dental Association, 2022), and a review in the Journal of the American Dental Association found too little data to support their safety and effectiveness claims (Brooks et al., 2017). If you use one, don’t let it replace your fluoride toothpaste. Read more on whether charcoal toothpaste is safe.
What it means for you
If your teeth have surface stains
A whitening toothpaste is a reasonable, low-cost first try. Pick one with fluoride, because fluoride toothpaste prevents tooth decay better than toothpaste without it (Walsh et al., 2019), and look for the ADA Seal, which guarantees the abrasivity limit (American Dental Association, 2026). Give it several weeks, since the trials measured results at six weeks or more (Soeteman et al., 2018). If coffee is your main culprit, see how coffee affects your teeth.
If you want a bigger change
Ask your dentist about peroxide bleaching, either in the office or with custom trays at home. The ADA recommends talking with a dentist first to find out whether whitening is right for you (American Dental Association, 2022), particularly if you have crowns or fillings on your front teeth.
Questions to ask your dentist
- Are my stains on the surface, or is the color inside my teeth?
- Would a whitening toothpaste be enough, or do I need bleaching?
- Will my fillings, crowns or veneers stand out if my natural teeth get lighter?
- Which toothpaste do you suggest if my teeth are sensitive?
When to see a dentist
Book a dental visit if:
- Stains don’t budge after several weeks of a whitening toothpaste, which may mean the discoloration is inside the tooth.
- Your teeth or gums become sore or sensitive and it doesn’t settle after you stop the product.
- You see white, brown or black spots that could be early decay rather than stain.
- You’re planning to whiten and have crowns, veneers or fillings on your front teeth.
For sudden severe pain, swelling or a broken tooth, see what to do in a dental emergency.
The bottom line
Whitening toothpastes do remove surface stains better than regular toothpaste, but the change is modest, usually less than two shades, and they can’t lighten the color inside your teeth. Blue covarine pastes add a temporary tint, and strips or dentist-supervised bleaching work better if you want a real change. Choose a fluoride toothpaste with the ADA Seal, and see a dentist if stains don’t shift or your teeth become sensitive.
References
American Dental Association. (2022). Whitening. https://www.ada.org/resources/ada-library/oral-health-topics/whitening
American Dental Association. (2026). Toothpastes. https://www.ada.org/resources/ada-library/oral-health-topics/toothpastes
Brooks JK, Bashirelahi N, Reynolds MA. (2017). Charcoal and charcoal-based dentifrices: A literature review. Journal of the American Dental Association, 148(9), 661–670. https://doi.org/10.1016/j.adaj.2017.05.001
Buruiana DL, Ghisman V. (2025). In vitro evaluation of the effects of toothpastes and color correctors on the surface integrity of demineralized human enamel. Dentistry Journal, 13(10), 443. https://doi.org/10.3390/dj13100443
Devila A, Lasta R, Zanella L, Agnol MD, Rodrigues-Junior SA. (2020). Efficacy and adverse effects of whitening dentifrices compared with other products: A systematic review and meta-analysis. Operative Dentistry, 45(2), E77–E90. https://doi.org/10.2341/18-298-L
Geduk ŞE, Sağlam G. (2024). The effect of whitening toothpastes on the surface properties and color stability of different ceramic materials. BMC Oral Health, 24(1), 1305. https://doi.org/10.1186/s12903-024-05103-x
Hajisadeghi S, Khansari M, Yazdanian M, Keykha E. (2025). Effect of whitening dentifrice on discoloration of tooth surface: An updated systematic review and meta-analysis. BMC Oral Health, 25(1), 610. https://doi.org/10.1186/s12903-025-05851-4
Joiner A. (2010). Whitening toothpastes: A review of the literature. Journal of Dentistry, 38(Suppl 2), e17–e24. https://doi.org/10.1016/j.jdent.2010.05.017
Kwon SR, Wertz PW. (2015). Review of the mechanism of tooth whitening. Journal of Esthetic and Restorative Dentistry, 27(5), 240–257. https://doi.org/10.1111/jerd.12152
Santos ME, Silva ROD, Cavalcanti YW, Meireles SS. (2024). At-home bleaching versus whitening toothpastes for treatment of tooth discoloration: A cost-effectiveness analysis. Journal of Applied Oral Science, 32, e20230336. https://doi.org/10.1590/1678-7757-2023-0336
Soeteman GD, Valkenburg C, Van der Weijden GA, Van Loveren C, Bakker E, Slot DE. (2018). Whitening dentifrice and tooth surface discoloration: A systematic review and meta-analysis. International Journal of Dental Hygiene, 16(1), 24–35. https://doi.org/10.1111/idh.12289
Walsh T, Worthington HV, Glenny AM, Marinho VC, Jeroncic A. (2019). Fluoride toothpastes of different concentrations for preventing dental caries. Cochrane Database of Systematic Reviews, 3(3), CD007868. https://doi.org/10.1002/14651858.CD007868.pub3
Yıldızoğlu E, Manir M, Karadas M. (2026). Effects of different whitening toothpastes on the color and surface properties of resin composites after staining. BMC Oral Health, 26(1). https://doi.org/10.1186/s12903-026-08416-1
Zhang L, Joiner A, Gupta AK, Barili M, Platten S, McDonald MD, et al. (2025). Effect of blue covarine toothpastes on tooth colour: A randomised crossover study. International Dental Journal, 75(5), 100938. https://doi.org/10.1016/j.identj.2025.100938
References checked October 2026 · Editorial policy · Report a correction
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