Visibly Whiter Teeth at Home.

Used by over 1 million customers. Results in 7–10 days, designed for sensitive teeth.

Quick Answer

What’s the best way to whiten teeth without sensitivity?

Watch: how our LED whitening system works without the sensitivity

Fastest resultsLED whitening kits using Sodium Percarbonate — visible whitening in 7–10 days with a lower sensitivity profile than high-peroxide systems.

Easiest optionWhitening strips — simple daily routine, gradual results, and lower intensity than kit-based treatment.

Lowest sensitivityGentle whitening systems using PAP or Sodium Percarbonate — designed for comfort without compromising on results.

Why Our Whitening System Is Different

Most whitening products rely on high peroxide concentrations to deliver fast results — but this is also the main cause of sensitivity. Our systems use Sodium Percarbonate as the active ingredient, which releases oxygen to break down stains while avoiding the harsher effects often associated with high-peroxide whitening. The result: effective stain removal with a more controlled, comfortable whitening process.

Whitening, without the compromise

Whiter Teeth Without the Sensitivity

Our clinically-proven whitening systems use Sodium Percarbonate instead of harsh high-peroxide formulas — releasing oxygen to break down stains effectively while keeping sensitivity low.

Visible results in 7–10 days

Developed by a world-renowned dental professional

Used by over 1 million customers

Vegan-friendly and Made in Britain

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Smile Science Pro Teeth Whitening Treatment full kit

What Our Customers Say

Over 1 million customers have transformed their smile with Smile Science.

Verified Customer

“It took my teeth so many shades whiter and barely any sensitivity whatsoever.”

Maddie F

Verified Customer

“This kit is amazing! I have pretty white teeth as it is but even after I can see a difference!”

Elliot R

Verified Customer

“I love the teeth whitening product. It’s easy to use, perfect for getting ready at the same time.”

Jem X

Verified Customer

“Nothing but positive comments when it comes to my teeth whitening kit! I personally saw some significant results.”

Taaliyah P

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Different whitening methods suit different goals — all designed to balance results with comfort.

Fast Results

Teeth Whitening Kits

Structured treatments designed to deliver noticeable whitening in 7–10 days, while avoiding harsh high-peroxide systems. Start Whitening →

Quick & Easy

Whitening Strips

A simple daily whitening routine, ideal for gradual results and lower sensitivity compared to intensive treatments. Shop Strips →

Gentle Whitening

Sensitive Whitening

Formulated for those concerned about discomfort, using lower-intensity whitening approaches. Shop Gentle →

Maintain Results

Maintenance Products

Keep your teeth brighter for longer with regular top-ups that help prevent new stains. Maintain Results →

Find Your Method

The right method depends on how quickly you want results — and how sensitive your teeth are.

Method	Speed	Sensitivity	Best For
Whitening Kits	Fast (7–10 days)	Low–Medium	Fast results with controlled sensitivity
Whitening Strips	Medium (1–3 weeks)	Low	Easy daily whitening
Sensitive Whitening	Medium	Very Low	Maximum comfort
Maintenance Products	Ongoing	Minimal	Keeping results between treatments

Man using Smile Science Harley Street teeth whitening pen as part of daily whitening maintenance routine

Whiten Your Teeth Once.

Maintain for Longer.

For the best long-term results, start with a whitening treatment and maintain your smile with regular top-ups. Maintenance products like whitening pens, foams, and toothpaste help prevent stains from returning and keep your teeth brighter for longer.

Step 1

Complete a full whitening treatment course with our LED Whitening Kit for visible results in 7–10 days.

Step 2

Maintain your results daily with our Whitening Toothpaste or Whitening Foam to prevent new stains forming.

Step 3

Top up with our Whitening Pen for on-the-go maintenance and keep your smile brighter for longer.

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Award Winning Teeth Whitening

ASOS The Beauty Awards 2019 Highly Commended

In the press

What The Beauty Experts Say

Don’t just take our word for it. Here’s what the beauty experts had to say after testing our teeth whitening products…

“I’ve used the kit and strips a few times and always had a good experience with them. I noticed a difference after a few uses.”

Lisa Oxenham

Beauty and Style Director for Marie Claire

“I’ve been sampling the Smile Science teeth whitening kit during the first lockdown and was so impressed with the results after the first few uses…”

Alicia Irvine-MacDougall

Editor of Editor’s Beauty

“I’ve started to use the pen and strips in lockdown as a pastime and enjoyed using them!”

Sarah Bradbury

Content Commercialisation Editor for Daily Mirror

As seen in

Trusted and featured by the UK’s leading beauty, lifestyle and health publications.

Expert Teeth Whitening Guides

A permanent knowledge base to help you choose the right whitening method, understand the ingredients, and get the most from your results.

Best & Comparisons

How-To & Problems

Safety & Science

Toothpaste & Tablets

Teeth Whitening FAQs

What’s the least sensitive way to whiten teeth? Gentle whitening systems using Sodium Percarbonate or PAP-based ingredients are typically the lowest sensitivity options. Gradual methods like whitening strips are also well-tolerated. Controlled whitening kits using Sodium Percarbonate are designed to balance results with comfort for most users.

Is peroxide-free whitening better for sensitivity? Many people prefer alternatives like Sodium Percarbonate-based systems, which release oxygen to break down stains while aiming to reduce discomfort compared to high-peroxide treatments. PAP-based products are the gentlest option for daily use.

What’s the best way to whiten teeth at home? The best method depends on your goals. Whitening kits provide the fastest results — typically visible within 7–10 days. Strips are easier to use daily and suit gradual whitening. For the best long-term outcome, combine an initial kit treatment with a consistent daily maintenance routine.

Are whitening kits better than strips? Whitening kits generally deliver faster and more noticeable results, while strips are more convenient for daily use and have a lower sensitivity profile. For most people, the strongest long-term approach is to use a kit for initial treatment and strips or maintenance products to sustain results.

Is teeth whitening safe? Yes — modern whitening products are safe for most healthy adults when used as directed. Whitening works on stain molecules rather than the enamel structure itself. The most common side effect is temporary sensitivity, which typically resolves within 24–48 hours after a session.

How long do whitening results last? Results typically last 3–12 months depending on the method and maintenance routine. LED whitening kits tend to deliver longer-lasting results (6–12 months) than strips alone. A consistent daily maintenance routine significantly extends brightness between treatment courses.

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Visibly Whiter Teeth at Home.

What’s the best way to whiten teeth without sensitivity?

Why Our Whitening System Is Different

Whiter Teeth Without the Sensitivity

What Our Customers Say

Shop Whitening Products

Teeth Whitening Kits

Whitening Strips

Sensitive Whitening

Maintenance Products

Find Your Method

Whiten Your Teeth Once.

Maintain for Longer.

Step 1

Step 2

Step 3

Award Winning Teeth Whitening

What The Beauty Experts Say

As seen in

Expert Teeth Whitening Guides

Best & Comparisons

How-To & Problems

Safety & Science

Toothpaste & Tablets

Teeth Whitening FAQs

Teeth Whitening Products

Smile Science

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