Is Teeth Whitening Safe? What You Need to Know

Teeth whitening is one of the most popular cosmetic treatments in the UK, and done properly it’s also one of the safest. “Properly” is the important bit. Here’s what to know before you start.

Is it safe?

Whitening carried out or prescribed by a dentist is safe for the vast majority of people. We use regulated products, protect your gums and set the strength to suit your teeth, so it works without damaging the enamel.

Why dentist-led matters

In the UK it’s illegal for anyone who isn’t a registered dental professional to whiten teeth. Salon and DIY kits aren’t regulated. They often use the wrong concentration and can burn the gums or leave teeth patchy. With a dentist doing it, it works and it’s safe.

Will it hurt my teeth?

Some people get a bit of sensitivity, which usually settles within a day or two. It doesn’t weaken your teeth. If you’re prone to sensitivity, we can adjust the treatment.

What does safe, dentist-led whitening cost?

At Toothi London in Edgware it’s £250 for a single in-practice session or £350 for custom home trays with professional gel, after a £55 examination. To see how that compares across the country, our guide to what teeth whitening costs in the UK sets out the typical price bands and what’s behind them. Every fee is published on our fee list.

Thinking about whitening? Book a consultation at Toothi in Edgware and we’ll tell you which option is safest for your teeth.

Book now – choose your time

Opening times

Monday9.00am – 6.00pm
Tuesday9.00am – 6.00pm
Wednesday9.00am – 6.00pm
Thursday9.00am – 12.00pm
Friday9.00am – 6.00pm
Saturday9.00am – 5.00pm
Sunday10.00am – 5.00pm

Stay Connected

020 3148 2444
[email protected]

1 Handel Parade
Edgware
London HA8 6LD

Our Treatments

General DentistryInvisalignTeeth whiteningDental ImplantsComposite BondingVeneersEmergency Dentist

Useful links

AboutMeet our teamFeesAreas we coverCancellation policyComplaints procedurePrivacy policy
© 2026 Toothi. All rights reserved.
Cherry Dental Ltd trading as Toothi is a credit broker, not a lender, and is authorised and regulated by the Financial Conduct Authority (FRN 957242). Credit is provided by Tabeo, subject to status. Finance available on treatments over £250.
CallWhatsAppBook Now