Costs & Charges
How much does teeth whitening cost in the UK?
By The Local Dentist Editorial · Updated 13 July 2026
The two professional options and what they cost
Dentists offer two main whitening routes. Home whitening — custom-made trays plus professional-strength gel you wear at home over a few weeks — typically costs £250–500. In-chair whitening, where a stronger gel is applied in the surgery in a single visit, sometimes with a light, typically costs £300–700; many practices combine it with take-home trays to maintain the result, which pushes towards the top of the range. Prices are set by each practice, so the same treatment can vary noticeably between dentists in the same city — one of the clearest cases where comparing private prices pays off.
Why whitening is never on the NHS
NHS dentistry covers treatment that is clinically necessary to protect your dental health. Whitening changes the colour of healthy teeth, so it is classed as cosmetic and sits entirely outside the NHS banding system — no NHS practice can offer it under NHS charges, and no exemption certificate applies. If a discoloured tooth has an underlying clinical cause, such as a dead nerve after an injury, a dentist can discuss the appropriate treatment for the tooth itself; the cosmetic whitening element remains private. Budget accordingly: whitening is a wholly private purchase wherever you have it done.
The legal line: dentists only
Tooth whitening is legally classed as dentistry in the UK. Only professionals on the General Dental Council (GDC) register may perform it, and products containing more than 0.1% hydrogen peroxide can only be used within dental treatment. Whitening offered by beauty salons, hairdressers, or mobile technicians is illegal, regardless of any 'training certificate' on the wall — and the GDC prosecutes illegal whitening. Cheap salon offers are not a bargain; they are unregulated procedures on your teeth and gums with no professional accountability if something goes wrong. Before booking anywhere, check the clinician on the GDC register at gdc-uk.org.
Shop-bought products and getting value from professional whitening
Over-the-counter whitening strips and toothpastes are legal but capped at very low peroxide levels, so results are modest compared with dentist-supervised treatment. If you go professional, ask what strength gel is used, how many in-chair sessions the price includes, whether take-home trays for top-ups are bundled, and what results are realistic for your teeth — crowns, veneers, and fillings do not whiten, which is exactly the kind of thing a proper dental assessment catches first. A check-up and hygienist clean before whitening usually improves the result, since surface staining lifts with cleaning alone. A dentist can advise what combination suits your teeth.
People Also Ask
Can I get teeth whitening on the NHS?
No. Whitening is cosmetic, and the NHS only funds clinically necessary treatment. Every whitening treatment in the UK is private, with prices set by the practice.
Is salon teeth whitening really illegal?
Yes. Tooth whitening is dentistry by law, so only GDC-registered dental professionals may perform it. Salons and mobile whitening services acting outside dentistry are breaking the law and can be prosecuted.
Which is better — home kits or in-chair whitening?
In-chair whitening gives faster results in a single visit; dentist-supplied home trays whiten more gradually and make top-ups easy. Many practices combine both. A dentist can advise which suits your teeth, especially if you have sensitivity or existing restorations.
How long does whitening last?
Typically months to a few years depending on tea, coffee, red wine, and smoking. Take-home trays let you top up affordably. Existing crowns and fillings will not change colour, so discuss expectations with your dentist first.
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This article is general information for UK patients, not clinical advice, and NHS rules and charges change — confirm current rules on nhs.uk or speak to a dentist before acting. For severe facial swelling affecting breathing/swallowing, uncontrolled bleeding, or trauma call 999 / go to A&E; otherwise NHS 111 for urgent dental access. Price figures are indicative benchmarks from ourmethodology.