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The Harley Street Story

Our Story

Welcome to Smile Science Harley Street — we believe that everyone should love their smile! This philosophy led us to open our first clinic back in 2010, offering professional teeth whitening to over 25,000 customers at 80% less cost than a traditional dentist.

Our London clinic, based in Harley Street, synonymous with royalty and A-list celebrities, embodies a philosophy of premium service at affordable prices.

In 2015 we created the Harley Street experience at home with the launch of Smile Science Harley Street teeth whitening kits.

Clinically Proven Results

Sold to over 1 million customers, our at-home teeth whitening kits have been formulated by world-renowned dentist Dr Martin Giniger and are clinically proven to whiten teeth by up to 8 shades in just 10 days, giving you professional results at prices you can afford — all from the comfort of your own home.

Our unique 2-step formula of professional at-home stain removal and teeth whitening comes at a cost that is affordable to everyone, giving you improved self-confidence through a beautiful, whiter smile.

Our teeth whitening products are multi-award winning, as voted for by senior beauty editors, beauty industry experts, and you. They include Beauty Awards with OK!, Beauty Awards with ASOS, and GQ Men’s Grooming Awards.

Head of Research at Smile Science Harley Street

Dr Martin Giniger, Head of Research at Smile Science

Dr Martin Giniger

Leading authority on toothpaste and teeth whitening formulations, recognised as a top expert in the dental products industry.

Dr Giniger is a world-renowned dentist with a PhD in Chemistry and specialty training in Oral Medicine. He has spent years working with the world’s largest oral care companies and top universities, and has served as an expert authority on oral care for the USA government during clinical trials.

Why Smile Science Harley Street Uses Sodium Percarbonate, Not Hydrogen Peroxide

Sodium Percarbonate teeth whitening results

Dr Martin Giniger has used over 40 years of research to identify the optimal formulation to safely and effectively whiten teeth without unwanted side-effects. Yes, hydrogen peroxide is extremely effective for teeth whitening — but UK law restricts teeth-whitening products containing over 0.1% hydrogen peroxide to use by registered dental professionals only.

Our key whitening ingredient, Sodium Percarbonate, has been proven to deliver whitening results comparable to hydrogen peroxide. It might have a long name, but it’s simply a combination of eco-friendly compounds that break down into oxygen, water, and sodium carbonate (soda ash) — giving an effective bleaching effect without the risks that come with hydrogen peroxide.

The Clinical Trials

Whitening Gel — 20 Minute Treatment, Tested Over 10 Days

Smile Science whitening gel clinical trial

Our whitening gel was tested in an independent, double-blind clinical trial conducted by third-party dentists, involving 50 participants aged 18 to 70. Each participant completed a 10-day cycle of 20-minute treatments — half received a commercially available peroxide-based product, the other half our peroxide-free formulation.

  • Mean shade improvement: 8.3 shades whiter
  • 73% reported less tooth sensitivity immediately after treatment
  • Colour rebound after 10 days: just 0.2 shades, versus 0.7 shades for the control group

Neither the dentists nor participants knew which treatment they were receiving. Shade improvement was measured both in-person using Vita shade assessment and digitally via Spectrophotometer Assessment of Tooth Lightness — confirming our whitening gel’s superiority over the control, both in overall shade improvement and reduced colour relapse.

Ready to try it for yourself? Explore our LED Teeth Whitening Kit or read more about what makes Sodium Percarbonate different.

Sustainability

We’re innovators at Smile Science, and as such are always looking ahead for the next best products to add to our teeth whitening kits. As the world moves towards a more sustainable direction, so have we.

Our latest product features eco-friendly, water-less toothpaste tablets, free from palm oil. With mono plastic packaging that’s easier to recycle compared to traditional toothpaste tubes, in line with the packaging hierarchy to Reduce, Reuse, Recycle.

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