How Much Is Teeth Whitening in the UK?

Because it's cosmetic: it changes how your teeth look rather than fixing a problem. The nhs.uk teeth whitening page puts it plainly: "It's not available on the NHS, so you have to pay for it privately." (I checked that page on 22 October 2026; it was last reviewed on 19 August 2025.)

What the NHS can cover is the healthy-mouth part. The NHS says whitening isn't done if you have unhealthy teeth or gums, so if decay or gum problems need sorting first, that's treatment in its own right, and it comes before any whitening.

Here's the thing: you're not paying for a tube of gel. You're paying for the bit that makes it legal and properly checked. In the UK, whitening products stronger than 0.1% hydrogen peroxide, up to a maximum of 6%, can only be provided through a dentist, for adults over 18, after an examination. The General Dental Council's position is that whitening is the practice of dentistry, so it can only be carried out by a dentist, or by a dental hygienist, therapist or clinical dental technician on a dentist's prescription.

So a dentist-led whitening course usually includes:

• An examination first, to make sure your teeth and gums are healthy enough and whitening is right for you.
• Trays made to fit your teeth, if you're whitening at home, so the gel stays on your teeth and off your gums.
• The whitening gel itself, at a strength you can only get through a dentist.
• Someone to check how it's going, and to help if your teeth get sensitive.

The NHS describes the home version as a kit with gel and small trays that you wear for around 2 to 6 weeks. Some practices also offer whitening done in the surgery. At Minti, whitening is a full at-home course, planned and supervised by a dentist.

I'll be straight with you: I can't give you a UK average worth printing. I looked for one from a reputable, non-commercial UK source, such as the NHS, the Oral Health Foundation, the British Dental Association or Which?, and none of them publishes a typical price.

What moves the price is fairly predictable:

• whether it's a home course, in-surgery whitening, or both
• whether the price includes the examination and the trays
• how much gel you're likely to need, and whether top-up gel is extra later
• whether any other treatment needs doing first

Ask for the full cost in writing and check what's included. At Minti, private fees are confirmed in writing before treatment, and the fees and finance page explains the options. If you'd like to weigh the two main routes against each other, I've written about dentist vs at-home teeth whitening.

I'll keep this bit straight, because it's where people get hurt. Whitening in a beauty salon, a kiosk or a mobile "smile bar" by someone who isn't a registered dental professional is illegal in the UK. The Oral Health Foundation warns it can permanently damage your teeth and gums, and the NHS says whitening from places like beauty salons, or with kits bought from a pharmacy or online, doesn't work as well and may harm your teeth and gums.

Legal shop-bought kits can contain no more than 0.1% hydrogen peroxide. The Oral Health Foundation says that's too low to make a noticeable difference to the colour of your teeth. So the cheap legal option often doesn't do much, and the cheap option that does do something is often illegal. When Which? tested 36 whitening products from online marketplaces in 2021, 21 contained more hydrogen peroxide than the legal limit for home use. A BDA spokesperson warned that products like that can burn your gums, and fixing the damage costs far more than whitening ever would. More on that in are teeth whitening strips safe?

If you think you've been offered illegal whitening, the Oral Health Foundation says you can report it to Trading Standards or the General Dental Council.

This is worth knowing before you spend a penny. Whitening only lightens natural teeth. The Oral Health Foundation says it won't work on fillings, crowns or veneers, and the NHS says it's not recommended if you have crowns, dentures or implants. Picture a room where you repaint the walls and forget the door. The walls look lovely. The door now looks a lot older.

If you've got white fillings or bonding at the front, they may need replacing afterwards to match, and that's a cost to factor in. I cover it in can you whiten composite bonding? Whitening isn't permanent either, so it's worth reading how long does teeth whitening last? before you budget. I can't promise a particular shade for anyone, because teeth respond differently.

For whitening itself, there's no rush. If you haven't seen a dentist in a while, a check-up first makes sense anyway. For the bigger picture on safety, results and options, see my teeth whitening guide and is teeth whitening safe?

Call us today, and say it's urgent, if after any whitening:

• you have tooth pain that isn't settling
• your gums look burnt, white and sore, or have blistered
• your gums, lips or face have swollen

The NHS lists sensitivity, sore gums or throat and white patches on the gums as possible side effects, and says to talk to your dentist if any side effects bother you. If you used a product from outside a dental practice, stop using it and bring the packaging with you.

If you're near Harlow or Enfield and you're weighing up whitening, I'd much rather talk you through it and give you a written price than have you gamble on a bargain kit. Ring your nearest Minti practice to book an assessment. If you're in pain or your gums are sore after whitening, say it's urgent and we'll do our best to see you the same day. Anywhere else, or out of hours, call NHS 111.

This article is general information, not a quote or a treatment plan. Whether whitening is right for you, and what it costs, needs an examination in person.