S3 Sensitivity Science delivery box fitting through a letterbox

Forget that you ever had sensitivity.

Tried everything for sensitive? Try S3 and stop second-guessing hot & cold sips. 

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90%
FEEL LESS SENSITIVE WITH S3
96%
s3 feels gentle on teeth
85%
prefer s3 to the market leader
77%
feel a difference within 24 hours

*Based on an independent third-party study of 52 existing sensitive toothpaste users. 

As featured in

“The biggest sensitivity toothpaste breakthrough in 15 years”

What makes S3 different? The clue is in the name.

Calm + Strengthen + Protect. The three things sensitive teeth need, in one daily toothpaste.

Dr. Louisa Jarvie
Dr. Louisa Jarvie S3 founding dentist

“Many of my patients have tried sensitive toothpastes without seeing results. S3 is different in that it combines 3 ways to support sensitive teeth in one toothpaste, providing a complete approach to daily care.”

— Dr. Louisa Jarvie, S3 founding dentist
Patent pendingS3 Repair Technology™
Calms 5% Potassium nitrate

Helps provide daily comfort for sensitive teeth

Strengthens 10% Nano-hydroxyapatite + Fluoride

Actively restores & strengthens enamel surface

Protects 5% Biomimetic hydroxyapatite

Forms an invisible mineral layer for lasting daily protection

S3 Repair Technology™

Three actives. One formula.

Calms KNO₃

Helps provide daily comfort for sensitive teeth

Strengthens n-HAP + MFP

Actively restores & strengthens enamel surface

Protects Bio-HAP

Forms an invisible mineral layer for lasting daily protection

Active at enamel surface within 2 minutes.

Not only dentist recommended. Dentist owned.

We didn't survey 100 dentists for an advert. We partnered with 20+ UK dentists to rethink what sensitive care looks like.

23 dentist owners across the UK

Dr Victoria Sampson

Dr Victoria Sampson

BDS, MFDS · London

Most sensitivity toothpastes just mask the problem. S3 goes after the root cause. It calms the pain, while also rebuilding the enamel and laying down a protective layer.

independently proven

Results you can see. And feel.

superior surface repair
S3 better seals the weakened areas that cause sensitivity.

Dentine tubules are microscopic channels running through the layer beneath your enamel. When they sit open, heat, cold and pressure reach the nerve inside your tooth — the twinge you feel as sensitivity. Sealing them helps block that signal at the surface.

Market leader
84% sealed
100% sealed
Dentine tubule coverage after treatment
University of ReadingIndependently tested at the University of Reading
01 / 04
University of ReadingIndependently tested at the University of Reading

Loved by people that used to feel sensitivity.

S3 was developed and tested with existing sensitivity sufferers. Here’s what they said.

4.8
Rated Excellent
Trustpilot
Top review · Sensitivity ★★★★★
“There was an almost immediate difference in how my teeth reacted to cold drinks, ice cream, etc., and it has only got better and better since then.”
Leighton Brown · 6 weeks in Read full review →
Read reviews about
Read more reviews →
Samia
“Pleasantly surprised by how much more my teeth can handle!”Samia · Independent Consumer Panel
Hand holding an S3 Daily Sensitive Toothpaste tube and carton in sunlight
Marija
“Finally, a toothpaste that actually works!”Marija · Independent Consumer Panel
Elaine
“After a week of use I started to notice a difference.”Elaine · Independent Consumer Panel
S3 Daily Sensitive Toothpaste tube held over a pink basin with brass taps
Kirsty
“I could even bite into ice cream… with no pain at all!”Kirsty · Independent Consumer Panel
S3 Daily Sensitive Toothpaste tube held over a white basin beside an electric toothbrush
Amy
“My teeth definitely felt clean… super smooth.”Amy · Independent Consumer Panel
S3 Daily Sensitive Toothpaste tube held over a marble bathroom counter
Read more reviews →
Video reviews

Stop living around the moment. Start living in it.

With S3 you could feel less sensitive in 7 days. Next month? You've forgotten what sensitivity felt like.

A smooth, healthy smile after brushing with S3
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Want to learn more?

Find out what could be causing your sensitivity, and what you can do about it.

Dr Louisa Jarvie, MChD, BChD
In partnership with
Dr Louisa Jarvie, MChD, BChD
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Your questions, answered

S3 Daily Sensitive Toothpaste is the only toothpaste to contain S3 Repair Technology™, a unique technology that combines the three things that sensitive teeth need – all in a single formula.

Yes. The ingredients behind our patent-pending S3 Repair Technology™ have been backed by over 120+ clinical trials and reviews.

77% of existing sensitive toothpaste users feel an improvement within 24 hours, and 90% feel less sensitive within 4 weeks. The compounding effect of daily brushing with S3 continues to develop over 2-3 months.

Clinically active ingredients:
Nano-Hydroxyapatite, Biomimetic Hydroxyapatite, Potassium Nitrate, Fluoride, Xylitol.

Full ingredient list:
Glycerin, Sorbitol, Hydrated Silica, Aqua, Hydroxyapatite, Potassium Nitrate, Xylitol, Hydroxyapatite (nano), Sodium Monofluorophosphate ,
Poloxamer 407, Sodium Lauroyl Sarcosinate , Aroma, Xanthan Gum, Potassium Chloride, Cocamidopropyl Betaine, Carageenan, Phenylpropanol, o-Cymen-5-ol,
Decylene Glycol, Sodium Saccharin, Titanium Dioxide, Potassium Hydroxide, Menthol, Anethole, Mentha Piperita Oil, Limonene, Citrus Limon Peel Oil.

Thanks to S3's remineralising, strengthening and daily protective properties; the daily use toothpaste continues to compound over time to lead to long-term healthier and stronger teeth.

Yes, all of our formulations are proudly formulated vegan & cruelty free.

We're confident that you'll be glad that you've made the switch to S3. If you have not felt the benefits after 21 days of daily brushing, get in touch with the team and we'd be happy to support.