Get a brighter, whiter smile with teeth whitening!
5-star rated practice
Over 30 years experience
Stunning results
If you’d like the very best teeth whitening in Harley Street, our experienced cosmetic dental team can help you achieve a brighter, more confident smile.
Professional teeth whitening is one of our most popular cosmetic treatments because it delivers safe, effective and noticeable results under the care of qualified dental specialists.
Our practice has been delivering stunning results with over 30 years of cosmetic dentistry experience, led by Dr Mehran Sanei. Dr Sanei, active member of the American Dental Society of London since 1999, is recognised internationally for his expertise in cosmetic dental treatments, including teeth whitening, with a professional reputation built on safety and quality.
Your main goal when seeking a teeth whitening treatment is making your teeth whiter, but a professional and expert approach is about doing it safely, effectively and tailored to your unique oral health. Before treatment begins, our dentists will evaluate your gums, existing dental work, cavities, sensitivity, and overall oral condition. Based on this assessment, they can advise the best whitening strength and approach for you.
In contrast, over-the-counter whitening strips and DIY kits often use lower-strength agents, can fit poorly, and may cause uneven results or gum irritation. Without a professional exam, you could miss underlying issues like gum disease or cracked fillings that need attention before whitening. Professional oversight also helps you avoid unnecessary sensitivity and optimise your desired outcome: a safer, more predictable and longer-lasting transformation.
Dr Mehran Sanei (GDC No. 67683) is an expert teeth whitening dentist but his qualifications and experience go far beyond simple cosmetic dentistry.
Dr Sanei is recognised by both the American Dental Association and the British General Dental Council as a specialist in prosthodontics (the replacement and restoration of lost or damaged teeth) and gives lectures on a range of cosmetic dentistry and dental implant topics including professional teeth whitening.
Dr Sanei has all of the qualifications you might look for when seeking a teeth whitening dentist in Harley Street, London.
No one should feel so self-conscious that they have to cover their mouth when they laugh. Everybody’s smile is unique and what causes teeth to discolour and stain can be down to a number of different reasons.
We only use the best teeth whitening products at our Harley Street clinic. Polanight gel is extremely gentle on your teeth and gums and the fast-acting formula means you will see results in just a few hours.
After your consultation, we will create custom-made gel trays to fit your mouth and then provide you with your Polanight syringes to take away.
| Custom-made Teeth Trays | Yes |
| Choice of Strength (Carbamide Peroxide) | up to 16% |
| Number of Polanight gels | 10 |
| Long Lasting Solution | Yes |
| Easy To Apply | Yes |
| Application Time | 2 hrs or overnight |
| Safe & Approved Ingredients | Yes |
| Ideal For Sensitive Teeth | Yes |
| Noticeable Results | 5 to 14 days |
During your initial teeth whitening appointment at our London Harley Street clinic, our qualified consultants will discuss your medical and dental history and expectations. They will examine your mouth for existing restorations, cavities, leaking or cracked fillings, gum recession, gum disease, dental/gum infection and staining.
Our Harley Street consultants will be happy to answer any questions you might have about the procedure.
At 75 Harley Street, quick and affordable cosmetic dental treatments such as home tooth whitening can instantly improve your smile.
Tooth staining can be removed and with a tooth whitening home kit you can choose how white you would like your smile to be.
Even with mild discolouration of your teeth, our tooth whitening service at 75 Harley Street in London can really make a difference to the colour of your teeth.
We can help lighten you smile from yellow teeth to a white brighter smile.

"Dr. Mehran Sanei’s care and expertise are truly remarkable, from the initial consultation to the treatment plan I was genuinely impressed and highly satisfied. So glad to have come across Dr. Sanei, he’s the best dentist ever, so friendly, gentle and very thorough. Thank you! Stay blessed always."
Fatima Fateh
Teeth whitening at home gives fantastic results. It’s an excellent alternative to in-surgery whitening, and you will still get the same level of support and consultation from our Harley Street clinic.
Patients who used teeth whitening at home experienced more consistent and reliable results alongside less sensitivity to chemicals.
Teeth whitening at home is the perfect solution for clients who have tea, coffee, red wine or smoking stains on their teeth.
It can be helpful for those who wish to lighten their teeth and gain confidence in their smile. It’s also a brilliant solution for those who want to reverse the ageing and colouring effect or if they were born with congenitally dark teeth due to various medical conditions.
Following the right consultation at our clinic, many of our patients use teeth whitening at home before big occasions such as wedding days or interviews, when looking their best is imperative.
Custom made trays are made for the patient who will apply the provided peroxide gel to the inner aspect and wear them for a period of 3 hours or more per day. This can be done during the day or at night while sleeping. After 5-10 sessions, the teeth will have lightened to an impressive degree.
Click to watch the video below to help understand the process.
Before you can apply the solutions required for effective teeth whitening at home, our Harley Street consultants will take an impression of your mouth and create a set of custom-fitted trays, designed specifically for your mouth. They will also show you how to fill the trays, fit them over your teeth and explain the guidelines related to use and timing.
Trays for teeth whitening at home can be worn for multiple hours or overnight and are more comfortable and easy to use than you might imagine. If you have any concerns at all about using the gels or trays required for teeth whitening at home, our Harley Street consultants will be happy to help.
Following your treatment, we can offer you a review appointment at our clinic during which we will discuss your teeth whitening at home results and any further treatment that might enhance your smile.
Teeth whitening at home gives excellent and easy to achieve results but the length of time that your brighter smile lasts will be dependent on your lifestyle. The results from teeth whitening at home can be affected by tea, coffee, red wine or smoking.
However, by attending regular hygiene appointments at our Harley Street clinic and practising good hygiene maintenance at home, you can help your new smile to stay white for up to two years.
The great news about teeth whitening at home is that, once you have received your teeth whitening kit from our practice, you can ‘top-up’ your white smile whenever you want.
Only a very small percentage of patients report any sensitivity during teeth whitening at home procedures. A few patients experience cold sensitivity following the treatment but taking regular analgesia can usually relieve this.
Symptoms generally subside within 24 hours, after which you can continue the whitening treatment to achieve your dream result.
Teeth whitening at home is safe as long as it is overseen by a qualified dental specialist such as our team of consultants at our London Harley Street clinic. Be wary of beauty salons that offer teeth whitening and DIY home whitening kits.
Teeth whitening should always be performed under the supervision of a qualified teeth whitening dentist and DIY kits, including teeth whitening strips, can cause patchy results and leave your teeth and gums damaged and sensitive.
By far the most effective and safe way to improve the colour of your teeth is to choose professional teeth whitening at home under the careful administration of our Harley Street team.
This will depend on the concentration of whitening gel used, as well as the frequency and length of time you use it for. But, there will be a limit on how white your teeth will get.
In most cases, you can expect your teeth to lighten by at least three to four shades. The teeth whitening gel will bring your teeth to their optimum level of natural whiteness, and then plateau.
Once your teeth reach the level of brightness you want, or are not getting any lighter with the treatment, that’s when you know your treatment is complete.The best teeth whitening results are normally seen after two or three weeks of using Polanight every day.
Teeth whitening only works on natural teeth, so if you have dental veneers, crowns or bridges their colour will not change. It’s likely your dentist colour matched them to your natural set when placing them so, once whitened, you may find your real and replacement teeth no longer match.
Speak to our teeth whitening dentist here at 75 Harley Street in North London about having your dental crowns replaced after your treatment to match your newly whitened teeth.
It is important that you consult with a qualified cosmetic dentist before you have your teeth whitened. The condition of your teeth and gums as well as your general oral health must be clinically checked before a dentist can prescribe and advise the most appropriate tooth whitening solution for you.
Many people buy home teeth whitening products online or from unqualified therapists and assume they will be fine using them. This is extremely dangerous as there are a large number of factors your dentist must take into account before starting a teeth whitening programme.
When visiting us for your consultation at our Hampstead practice, your 75 Harley Street dentist will ask you a number of health and lifestyle questions and give you dental assessment. If your oral health is in good order, then you may start your treatment with our safe and approved teeth whitening products.
However, there are certain patients that we cannot treat. These are children, pregnant women, nursing mothers, and patients who suffer with gout.
Costs do vary depending on the type and quality of the tooth whitening products used. Dentists will also need to carry out the correct consultation procedures before any teeth whitening product can be advised or applied.
For our up-to-date tooth whitening fees, please view our teeth whitening costs on our fees page.
To find out if teeth whitening is suitable for you, and to ask any other teeth whitening questions you may have, please speak to our friendly team today on 020 7935 3914 to book your teeth whitening consultation.
Or feel free to pop in and make an appointment at our practice in Harley Street, London.
Professional whitening works only on natural tooth enamel. Restorations like crowns, veneers or fillings will not change colour. After whitening, your dentist can discuss matching any restorations if needed.
Or feel free to pop in and make an appointment at our practice in Harley Street, London.
Professional teeth whitening goes beyond cosmetic improvement. A qualified dentist assesses your gum health, enamel condition and existing dental work before treatment, ensuring whitening is safe and effective. Professional systems use custom-fitted trays and clinically approved whitening gels, delivering more even, longer-lasting results with reduced sensitivity compared to over-the-counter strips or DIY kits.
Or feel free to pop in and make an appointment at our practice in Harley Street, London.
Teeth whitening strips can irritate the gums or cause uneven whitening if they don’t fit properly. Without a dental assessment, issues such as gum disease, enamel wear or exposed roots may go unnoticed, increasing the risk of sensitivity or damage. Professional whitening is supervised, customised, and designed to protect both your teeth and gums throughout treatment.
Or feel free to pop in and make an appointment at our practice in Harley Street, London.
Professional whitening uses higher-quality, clinically approved gels and custom-made trays that ensure even contact with the teeth. This allows the whitening agent to work more effectively and consistently. Dentists also provide aftercare advice tailored to your lifestyle, helping maintain results for longer compared to shop-bought kits, which often deliver short-term or uneven whitening.
Or feel free to pop in and make an appointment at our practice in Harley Street, London.