You’ve probably noticed it. A photo where your smile doesn’t quite look the way you imagined it would. Or maybe you’ve been thinking about it for months – your teeth just aren’t as bright as they used to be, and no amount of whitening toothpaste has made any real difference.
You’re not alone. Tooth discolouration is one of the most common cosmetic concerns we see at our Croydon dental practice – and for most people, the solution is simpler, safer, and more affordable than they expect.
This guide answers everything Croydon patients ask us about teeth whitening: what causes staining, whether professional treatment is worth it, what it actually costs, and how to get started. No hype, no exaggeration – just honest information so you can make the right decision for your smile.
Quick answer: Professional teeth whitening is one of the fastest, most effective cosmetic treatments available. Most patients see results 4–8 shades lighter after a single course of treatment – with results that can last 1–2 years.
Quick answer: Professional teeth whitening is one of the fastest, most effective cosmetic treatments available. Most patients see results 4–8 shades lighter after a single course of treatment – with results that can last 1–2 years.
Before we talk about whitening, it helps to understand why teeth stain at all. There are actually two types of tooth discolouration – and they respond differently to treatment.
This is the most common type. It affects the outer layer of the tooth (enamel) and is caused by what you consume. Coffee, tea, red wine, cola, and certain foods like curry and soy sauce are the usual culprits. Smoking is one of the biggest contributors too – nicotine and tar leave stubborn yellow-brown stains that build up over time.
This type is harder to treat because it occurs within the tooth structure itself. It can be caused by ageing (dentine naturally darkens as we get older), certain antibiotics taken in childhood (like tetracycline), fluorosis from excessive fluoride during tooth development, or trauma to the tooth.
Professional whitening works brilliantly on extrinsic staining and many cases of intrinsic discolouration. Your dentist will assess your teeth before recommending a treatment to make sure you’re a good candidate – which is something no online kit or supermarket product can do.
This is probably the question we get asked most. And the honest answer is – there’s quite a big difference.
Over-the-counter whitening products like whitening strips, kits from Amazon, or “whitening” toothpastes are legally restricted to very low concentrations of hydrogen peroxide (0.1% in the UK). That’s not nearly enough to create meaningful whitening for most people.
Professional dental whitening, on the other hand, uses clinically approved products at higher concentrations – applied safely and monitored by a qualified dental professional. In the UK, only registered dental professionals can legally provide teeth whitening treatment using concentrations above 0.1% hydrogen peroxide.
The difference in results is significant. Most patients who’ve tried shop-bought kits and then come to us for professional whitening are genuinely surprised by the comparison.
There’s also a safety element worth mentioning. Improperly applied whitening products – especially those bought from beauty salons or non-dental providers – can cause serious damage to your teeth and gums. Sensitivity, chemical burns, and uneven results are all risks when whitening is performed by someone without dental training. According to the General Dental Council (GDC), teeth whitening is a dental procedure and must only be carried out by a registered dental professional or under their prescription.
At our Croydon practice, we use clinically proven whitening systems that are tailored to your teeth. Here’s what the process typically looks like:
Before anything else, one of our dentists will examine your teeth, take a shade reading to record your baseline colour, and discuss what outcome you're hoping for. This is also where we check for any existing decay, sensitivity issues, or restorations (like crowns or veneers) that might affect treatment.
For the best whitening results, your teeth need to be free from plaque and tartar. We often recommend a hygienist appointment before whitening begins - this maximises the treatment's effectiveness. You can find out more on our hygienist page.
We take custom impressions of your teeth to create trays that fit your mouth precisely. These are far more effective than the generic one-size trays in shop kits because they keep the whitening gel in contact with every surface evenly - and prevent gel from irritating your gums.
You'll apply the professional-strength whitening gel to your trays and wear them for a prescribed period each day - usually around 30–60 minutes, or overnight depending on the system. Most patients complete a full course over 2–3 weeks.
Once your course is complete, we review your results and advise on how to maintain your new shade. You'll also keep your custom trays - so top-up treatments in the future are simple and cost-effective.
One of the most searched questions in our area – and understandably so. Here’s an honest overview of what you can expect to pay:
| Treatment type | What it involves | Typical cost (Croydon) |
|---|---|---|
| Home whitening kit (home kit with custom trays) | Custom trays + whitening gel -completed at home over 2–3 weeks | *£265 instead of £365( £100 off) |
| Refill for whitening kit | Higher-concentration gel, light activation in practice – results in one session | Starting from £25 |
| Teeth Whitening (in clinic with Zoom Technology) | Replacement gel to refresh existing results | *£425 instead of £495 ( £70 off) |
This varies from person to person – but most patients with professional whitening maintain results for 12 to 24 months before needing a top-up. How long your results last depends on a few key factors:
The good news is that because you keep your custom-made trays, refreshing your whitening at home in the future is very straightforward and much more affordable than starting from scratch.
Professional teeth whitening, carried out correctly by a qualified dentist, is a well-established and safe treatment. The active ingredients — hydrogen peroxide or carbamide peroxide – have been used in clinical dentistry for decades and are backed by significant research.
That said, some patients do experience temporary sensitivity during or after treatment – particularly to hot or cold. This is completely normal and usually resolves within a day or two of completing the course. If you already have sensitive teeth, your dentist may recommend a lower concentration gel or a desensitising treatment alongside whiten
Tooth discolouration can occur for many reasons, including lifestyle habits and natural wear over time. Common causes include frequent consumption of staining foods and drinks like coffee, red wine, and tea, as well as smoking. In addition, ageing can thin the enamel, revealing the darker dentin underneath. Certain medications and poor oral hygiene can also contribute to dull or yellow teeth.
While over-the-counter whitening products are widely available, they often provide limited and uneven results. Professional teeth whitening, performed by a qualified dentist in Croydon, uses clinically approved whitening agents that are both safe and effective. Dentists customise the treatment based on your needs, ensuring even whitening while protecting your gums and enamel.
At iCare Dental Croydon, we offer professional whitening starting from £265. Our current pricing includes:
Home Whitening Kit: £265 (Save £100 off the original £365).
In-Clinic Zoom Whitening: £425 (Save £70 off the original £495).
Whitening Refills: Available from £25 for existing patients.
iCare Dental Croydon offers bespoke, dentist-led whitening treatments that are safer and more effective than over-the-counter options. Located in Pinnacle Tower, Saffron Central Square, we use advanced formulas designed to minimize sensitivity while achieving a significantly brighter, more natural-looking smile in just few days.
Yes, we provide in-chair laser whitening at our Croydon clinic, which can brighten your smile by several shades in a single 60 to 90-minute appointment. This is an ideal solution for patients in South London looking for immediate results for weddings, interviews, or special events.
Yes. All whitening treatments at iCare Dental are performed or supervised by GDC-registered dentists. We assess your enamel and gum health before treatment to ensure the process is safe, using regulated hydrogen peroxide levels that comply with UK safety standards to prevent irritation.
Yes, we offer a free consultation for new patients interested in cosmetic or specialist treatments such as Invisalign, dental implants, or a smile makeover. This is a no-obligation appointment where our dentist assesses your needs and answers all your questions.
iCare Dental Croydon is centrally located and regularly sees patients from across the local area — including South Croydon, East Croydon, Purley, Thornton Heath, Addiscombe, Shirley, Norwood, Selsdon, and Waddon. If you’ve been searching for “teeth whitening near me” in the CR0 postcode or surrounding areas, our practice is convenient to reach with flexible appointment times.
We welcome both new and existing patients for whitening consultations — you don’t need to be an existing patient to book.
Same-week appointments available. Serving Croydon, CR0 & surrounding areas.
We are committed ourselves to provide the highest quality in our dental services and continuously update our knowledge and equipment for our patients benefit and convenience. Our Dentists are well trained to ensure that you are looked after in a warm, modern, and friendly environment.
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