Quick answer — UK price ranges per method
MethodUK average costTime to resultDIY whitening strips£20–£50—2-4 weeks, limited effectDIY LED kits (online)£30–£100—2-4 weeks, variable qualityWhitening toothpaste£5–£15—Very limited, surface onlyDentist-supervised take-home trays£350–£500—2 weeks, professional strengthIn-chair whitening (Philips Zoom etc.)£395–£650—1 hour + follow-upCombined (in-chair + take-home)£650–£900—3-4 weeks total, gold standard
At Dental & Wellness London, our professional teeth whitening in Islington is priced transparently: £450 for either take-home or in-chair, and £780 for the combination.
DIY whitening — costs and limitations
Whitening strips: £20–£50. Contain lower concentrations of hydrogen peroxide than professional products (typically 5-10% vs professional 18-32%). Effective for surface stain removal but limited effect on internal tooth colour.
DIY LED whitening kits: £30–£100. Marketed with dramatic claims but often use lower-strength gel with LED light that adds little to the process. Some kits sold online exceed UK regulatory limits on hydrogen peroxide (max 0.1% for consumer sale) — buying products that exceed this limit is buying illegal cosmetic product.
Whitening toothpastes: £5–£15. Effect on tooth colour is minimal — these remove surface stain and marginally polish enamel, but don't whiten intrinsic tooth colour.
Charcoal toothpastes: £5–£15. Should be avoided — abrasive particles wear enamel over time without meaningfully whitening internal colour.
DIY whitening produces limited results at the surface. Real change in tooth colour requires professional-strength gel used under dental supervision.
Take-home professional whitening — £450 (DWL canon)
Using custom-fitted trays and professional-strength gel, the workhorse of dental whitening: consultation and scan to fabricate custom-fit trays; professional-strength gel dispensed; home application wearing trays for a defined period; course duration typically 2 weeks; shade follow-up at the clinic.
Cost at DWL: £450, including tray fabrication, gel, and follow-up appointment. Whitening is only provided after a dental examination (£65) confirms a fit, clean and healthy mouth; the examination is not included in the whitening price.
Advantages: predictable result, controllable pace, can pause if sensitivity develops, custom trays reusable for future top-ups. Trade-offs: requires 2 weeks of consistent use, some sensitivity during treatment.
In-chair laser whitening — £450 (DWL canon)
Uses high-concentration hydrogen peroxide (25-38%) activated by an LED or similar light, delivered in a single clinic appointment of about 1 hour: consultation; professional cleaning to prepare enamel; gum protection applied; gel applied in 3-4 cycles of 15-20 minutes each with light activation; immediate shade check; follow-up appointment 1-2 weeks later.
Cost at DWL: £450, including treatment, immediate shade assessment, and follow-up.
Advantages: rapid result, no home compliance required. Trade-offs: sensitivity more common due to higher gel concentration; colour rebound at 1-2 weeks is normal, the final settled shade is what you assess at follow-up.
Combined approach — £780 (gold standard at DWL)
The gold standard: 1-hour clinic session for immediate result, plus 2 weeks of take-home trays to deepen and stabilise the shade. In-chair gives rapid initial change; take-home consolidates the effect for a deeper, more stable shade; the combined result outlasts either treatment alone; trays are yours to keep for future top-ups.
Cost at DWL: £780. For most patients seeking substantial whitening, this is the recommended approach.
Why prices vary
1. Brand of gel used — Boutique, Pola, Opalescence, Zoom, Enlighten have different unit costs and clinical profiles. 2. Number of sessions — some clinics bundle 2-3 sessions at higher cost. 3. Clinic location — London typically 10-20% above regional averages. 4. Practitioner experience — senior clinicians often price marginally higher. 5. What's included — some clinics charge separately for trays, follow-up, or refills; at DWL trays, gel and follow-up are included, and the dental examination (£65) is charged separately. 6. Premium tier pricing — some clinics operate a "premium" tier at £800–£1,200 for essentially the same treatment, often marketing rather than clinical difference.
Red flags in cheap whitening
Illegal hydrogen peroxide concentrations. UK regulation limits over-the-counter products to 0.1% hydrogen peroxide; professional products must be applied by a dentist. Any "consumer" product offering 6%+ H2O2 for home use without dental supervision is sold outside UK regulation.
Unsupervised beauty-salon whitening. Tooth whitening is a dental treatment and can only be legally delivered by GDC-registered dentists in the UK. Beauty salons offering it are operating illegally.
Sensitivity risk. Under-supervised whitening at high concentrations can cause severe tooth sensitivity, gum burns, and enamel damage.
"Permanent results" claims. No whitening is permanent. Realistic durability is 12-24 months before top-up.
DWL's transparent pricing
In-chair whitening: £450. Take-home whitening: £450. Combined in-chair + take-home (gold standard): £780. All prices include treatment delivery and follow-up; the dental examination is separate.
Book a whitening consultation
Call 020 8127 4567 · WhatsApp +44 7974 910222 · Visit 222 Essex Road, Islington N1 3AP. Mon-Fri 8am-7pm by appointment.
FAQs
How much does professional whitening cost in London?
£450–£780 depending on approach at DWL. UK London average is £350-£800.
Is DIY whitening safe?
Consumer products within UK regulation are safe but limited. Professional-strength gel at home requires dental supervision.
How long do results last?
12-24 months typically before considering a top-up, depending on lifestyle factors like coffee, red wine, and smoking.
Does whitening damage enamel?
Not when done professionally. Some sensitivity during treatment is common and resolves within 24-72 hours.
Can I whiten crowns and veneers?
No — cosmetic restorations such as veneers don't respond to whitening. Whitening is done first, then restorations replaced to match the new shade.
Is Zoom whitening better than take-home?
Different pathways to the same goal. Zoom gives faster initial result; take-home produces a deeper, more stable final shade. Combined is the gold standard.
Why is whitening at some clinics so cheap?
Sometimes cheaper products or shorter appointments; sometimes illegal levels of peroxide. Verify what's included and check the clinic is CQC-registered with GDC-registered dentists.
Can teeth whitening be done during pregnancy?
Not recommended. Defer treatment until after pregnancy and breastfeeding.
