MySweetSmile Teeth Whitening Powder — Full Review
The MySweetSmile teeth whitening powder is a peroxide-free, brush-on powder that polishes away surface stains — and it's our top powder pick. It's earned a strong reputation: rated 4.5/5 “Excellent” on Trustpilot across more than 8,000 reviews, used by over a million customers, and the winner of The Independent's IndyBest “Best Teeth Whitening Product” award in both 2023 and 2024. At £24.99, it's an affordable, gentle way to tackle everyday staining. Here's our honest review.
Key facts
● Brush-on whitening powder
● Peroxide-free formula
● Low abrasivity: RDA of 70 (see below)
● Used 1–2 times a week
● Lasts up to 6 months
● Price: £24.99 single tub (Buy 2 get one free £49.98)
Why we rate the MySweetSmile teeth whitening powder
This is our top powder pick, and the low-abrasivity point is a big part of why. Any brush-on whitening product has some abrasiveness — that's how it polishes stains — but too much can damage enamel over time.
MySweetSmile's powder has a Relative Dentin Abrasivity (RDA) of 70, which classes it as low abrasive. For comparison, common at-home options like baking soda and charcoal can reach RDA values around 150.
That's a genuine, measurable advantage over harsher DIY whitening, and it's why we'd point people here rather than towards charcoal powders. It's also peroxide-free, affordable, and backed by a live 4.5/5 “Excellent” rating across 8,000+ Trustpilot reviews.t” rating across 8,000+ Trustpilot reviews.
How you use it
Lightly dampen your toothbrush and dip it into the powder so the bristles are evenly coated. Brush for around four minutes — roughly a minute per quarter of your mouth — then rinse and follow with your normal toothpaste. Used one to two times a week, it helps lift surface stains and limit new build-up from coffee, tea, wine and similar.
Honest pros and cons
Pros: low abrasivity (RDA 70) versus harsher DIY powders; peroxide-free; the most affordable product in the range; long-lasting (up to 6 months); award-recognised and strongly reviewed.
Cons: powder is messier to use than strips or a pen; it works on surface staining rather than deeper discolouration, so some people pair it with the strips (that's the logic of the bundle); and as always, results vary and consistency matters. MySweetSmile recommends checking with your dentist before use if you have dental work.
Who it's for
A good fit if you want an affordable, gentle, everyday whitening option you can build into your normal brushing routine, and you're wary of harsher charcoal or baking-soda powders. Also a sensible maintenance product alongside strips. Less suited to anyone who wants the least-messy option — a pen or strips may suit better. Suitable for ages 12+.
FAQ
Is it abrasive / will it damage enamel? It has an RDA of 70, classed as low abrasive — considerably lower than baking soda or charcoal powders, which can be around 150.
Is it peroxide-free? Yes. How often should I use it? One to two times a week.
How long does a tub last? Up to 6 months.
Safe for dental work? MySweetSmile recommends checking with your dentist first, as dental work isn't designed to be whitened; the powder works on natural teeth.
The verdict
MySweetSmile's powder is our top powder pick — affordable, peroxide-free, and notably gentler than the charcoal and baking-soda powders many people reach for. The two IndyBest wins back up its reputation. A solid everyday option on its own, or paired with the strips for fuller coverage.