Teeth whitening, explained honestly.
What it really costs, why sensitivity is common, why it cannot whiten crowns or veneers, and the questions that keep you safe. We never name a clinic.
vs £200 to £1,000 UK
then it fades
usually short lived
Is it worth going abroad?
Professional teeth whitening uses a peroxide gel, applied in the clinic or in custom trays you wear at home, to lighten the natural teeth. In the UK it commonly costs about £200 to £1,000 depending on the method and clinic, and abroad it is often cheaper or bundled into a package. The saving is modest in absolute terms, and because whitening is the least invasive cosmetic dental treatment, it rarely justifies a trip on its own. It also does not change the colour of crowns, veneers, or fillings.
Costs below are indicative ranges, reviewed July 2025, and vary by method, strength, and clinic. They are not a quote and not a promise of a result.
The treatment, in plain terms.
Teeth whitening works by applying a peroxide based gel to the teeth, which breaks down stains and lightens the natural enamel. It is done either in the clinic, sometimes with a light to speed the gel, or with custom made trays and gel you use at home over a couple of weeks. Whitening only affects natural teeth, so any crowns, veneers, or tooth coloured fillings keep their original colour and may need replacing to match. In the UK, whitening is legally restricted to dental professionals, and high strength products used by people who are not registered can be dangerous.
Who it tends to suit. People with healthy teeth and gums and general yellowing or surface staining from food, drink, or smoking, who have realistic expectations and few visible restorations.
Who it tends not to suit. People with untreated decay or gum disease, many crowns or veneers on show, very sensitive teeth, deep internal staining that responds poorly to bleaching, and those who are pregnant. A check up should come first.
The price, honestly.
Whitening is relatively inexpensive everywhere, so the price gap abroad is smaller than for surgery or crowns. Cost is driven by the method, in the clinic or take home trays, the strength of the gel, and the clinic itself.
Indicative ranges, reviewed July 2025. Not a quote. Be wary of very cheap or very strong treatments offered by anyone who is not a registered dental professional, as misuse of peroxide can harm gums and enamel.
In the United States, professional whitening averages around 575 dollars. Whitening fades over months to a couple of years and may need top ups, which is a recurring cost wherever it is done.
What can go wrong.
Whitening is considered safe when carried out by a dental professional with proper products, but it is not without risk, and misuse of strong gels is genuinely harmful.
The most common effect. Studies suggest around 57 percent of people feel some sensitivity during or after whitening. It is usually mild and settles within a day or two, but can be sharp.
Gel that touches the gums, often from poorly fitted trays or overfilled trays, can irritate or burn the soft tissue. Proper trays and professional application reduce this.
Whitening does not lighten every stain equally, and deep internal staining responds poorly. Results vary, and no honest clinic can promise a fixed shade.
Crowns, veneers, and fillings do not whiten, so they can end up looking darker than the natural teeth and may need replacing to match.
Treatments using illegally high concentrations, or done by people who are not dental professionals, can cause lasting damage to enamel and gums. Stick to registered providers.
Six questions before you pay.
A safe provider is a registered dental professional who checks your teeth first, uses proper products, and answers all six in writing. Whitening is low risk in the right hands and harmful in the wrong ones.
Aftercare, and what happens once you are home.
First 48 hours
Some sensitivity to hot and cold is common and usually settles within a day or two. Avoid very hot or cold foods if your teeth feel tender.
First days
Avoid staining foods and drinks such as coffee, tea, red wine, and smoking while the teeth are most porous, often called the white diet.
Ongoing care
Maintain good brushing, limit staining habits, and use any maintenance gel as advised. Whitening is not permanent and gradually fades.
Months to years
Expect to top up over time as the colour fades. How fast depends on diet, smoking, and your natural teeth.
Whitening needs less follow up than surgical treatments, but if sensitivity is severe or the result is uneven, that is awkward to address once you have travelled home. Agree before you travel how any concerns and top ups will be handled.
Standard travel insurance rarely covers elective procedures or their complications. Read the policy closely and consider dedicated medical complications cover before you book.
Now you know what to ask, compare safely.
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The things everyone asks.
How much does teeth whitening cost abroad?
Often from about £100 in the clinic or less in a package, against roughly £200 to £1,000 in the UK. The gap is smaller than for surgery, so whitening alone rarely justifies a trip.
Does teeth whitening whiten crowns and veneers?
No. Whitening only lightens natural teeth. Crowns, veneers, and fillings keep their colour and may need replacing to match a newly whitened smile.
Is teeth whitening safe?
Yes, when done by a registered dental professional with proper products. Misuse of high strength gels, or treatment by untrained people, can damage enamel and gums.
Why are my teeth sensitive after whitening?
Sensitivity is the most common effect, reported by around 57 percent of people. It is usually mild and settles within a day or two, and desensitising products help.
How long do whitening results last?
From several months to a couple of years before fading, depending on diet, smoking, and habits. Most people need occasional top ups to maintain the shade.
Where to go next.
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See our dental implants guide and porcelain veneers guide, or Get Matched. More dental guides are in production.
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