Teeth Whitening Kenilworth & Stratford

Professional teeth whitening at Pennington Dental is dentist-prescribed home whitening with Boutique Whitening: custom-made trays and gel. Our overnight programme takes about six weeks, whitening your upper and lower teeth in turn. It costs £299 until 31 December 2026 at our Kenilworth and Stratford-upon-Avon practices. It starts with a free consultation to check whitening suits you.

Here is how it works, what results to expect and how to look after them.

How does professional whitening work?

1. Free consultation. A dentist checks your teeth and gums, records your starting shade and talks about the result you would like. If your gums need care first, we may suggest a hygiene visit before you begin.
2. Your trays are made. Trays are made to fit your teeth.
3. Collecting your kit. About two weeks later you collect your trays and gel, and we show you how much gel to use and how long to wear the trays.
4. Nights 1 to 14: upper teeth. Wear whitening gel in the upper tray overnight, with the desensitising toothpaste provided in the lower tray.
5. Nights 15 to 28: lower teeth. Swap over, so the lower tray holds the whitening gel and the upper tray holds the desensitising toothpaste.
6. Review after night 28. Dr Fuz checks your shade against your starting photos and asks how your teeth feel.
7. Further whitening as directed. Usually upper and lower together for about 2 more weeks, depending on sensitivity and comfort. That is why it is a 6-week programme.

How much does teeth whitening cost?

Teeth whitening is £299 until 31 December 2026, as shown on our treatment costs page. Your quote will set out exactly what is included before you start.

Who is whitening suitable for?

Whitening works on natural teeth. It does not change the colour of fillings, crowns, veneers or bonding, so these may stand out more after whitening. Decay or gum problems should be treated first. Under UK law, whitening must be prescribed by a dentist and is not provided to under-18s except to treat or prevent disease.

Will it make my teeth sensitive?

Some people get temporary sensitivity. The Boutique Whitening gel contains desensitisers to help reduce this, and your review lets us adjust things if needed. If your teeth feel sensitive, you can pause for a night or two and use the desensitising toothpaste. Tell us if sensitivity is bothering you.

How long do results last?

It varies from person to person. Results fade gradually, faster if you smoke or often have tea, coffee or red wine. Ask us about top-up whitening. Regular hygiene visits can also help remove surface staining. See is teeth whitening safe?

When should I start before a wedding or event?

Allow at least eight to ten weeks: around two weeks for your trays to be made, about six weeks of whitening including your review, and some leeway. If you are also having bonding or other cosmetic work, ask about timing, because fillings and bonding are usually matched to your new shade after whitening.

Frequently asked questions

How much is teeth whitening in Kenilworth and Stratford-upon-Avon?

At Pennington Dental, teeth whitening is £299 until 31 December 2026, at both our Kenilworth and Stratford-upon-Avon practices.

Is the whitening consultation free?

Yes. A free consultation checks whether whitening suits you before you commit.

Does whitening work on crowns or veneers?

No. Whitening only lightens natural teeth. Crowns, veneers, fillings and bonding keep their colour.

How long do I wear the whitening trays?

On the overnight programme you wear the trays while you sleep: upper teeth for nights 1 to 14, lower teeth for nights 15 to 28, then usually both together for about 2 more weeks after your review. A 90-minute day gel is also available. Your dentist will advise which suits you.

What should I read next?

• Is teeth whitening safe? Kits vs dentist
• Composite bonding

How do I book in Kenilworth or Stratford-upon-Avon?

Find out more about teeth whitening and teeth whitening in Kenilworth. Your first appointment is a free consultation: book a free consultation. Patients can’t book the hygienist directly: book a check-up first.

Call Kenilworth on 01926 863 236 or Stratford-upon-Avon on 01789 205 254, or book an appointment online. Find directions for our Kenilworth practice and our Stratford-upon-Avon practice.

New to us? See our new patient information and the full list of fees on our treatment costs page. To spread the cost of check-ups and hygiene visits, see the Pennington plan.

Further reading: NHS: teeth whitening.

Prices correct at time of publishing (9 November 2026).

Reviewed by Dr Fuz, BDS, BSc, MSc (Restorative Dentistry), GDC 76311. Last reviewed 9 November 2026.

This article is general information and is not a substitute for advice from your own dentist or doctor.