How Sensitive Toothpastes Work – and Why Yours Might Not Be Working for You

Dr Surina Sehgal Written and reviewed by · 27 Aug 2026 Dr Surina SehgalBDS · GDC 265147
PublishedReading time3 min read
How Sensitive Toothpastes Work – and Why Yours Might Not Be Working for You

Tooth sensitivity affects around one in three adults12 – and if you’re still feeling a sting with every sip or spoonful, your toothpaste may not be doing enough. A walk down the supermarket aisle offers a dizzying array of “sensitive” options, from Sensodyne Repair & Protect to Colgate Sensitive Pro-Relief. But if you’re still in discomfort, you’re not alone.

Why? Because most sensitive toothpastes take a narrow approach – addressing just one part of the problem. But sensitivity is more complex than that. Let’s break it down.

Two common ways sensitive toothpastes work.

1. Potassium nitrate toothpastes – e.g. Sensodyne Pronamel

These aim to ease the response of the nerves inside your teeth by introducing potassium nitrate. While widely used, this approach may take time to be effective – and can wear away without additional support.

2. Occluding toothpastes – e.g. Colgate Pro-Relief with Pro-Argin, Sensodyne Repair & Protect

These formulas use ingredients that help cover or fill exposed areas of dentine. While this can limit trigger access, it often doesn’t last and can leave gaps in long-term care.

So why do so many options still leave you in pain?

The reality is: most products address only one aspect of tooth sensitivity. They either aim to calm nerves or help shield exposed areas – but not both. That’s why many people still struggle, even after trying multiple brands.

It’s not about finding the right one of many. It’s about finding the right approach.

Bar chart comparing how single-action sensitive toothpastes address tooth sensitivity

S3 Daily Sensitive Toothpaste: a more thoughtful way forward.

S3 brings a new perspective to daily sensitivity care by combining three complementary actions in one routine product:

This triple active blend is what sets S3 Daily Sensitive Toothpaste apart – it’s not about a single quick fix, but rather a consistent, expert-informed formula that supports your teeth on multiple levels, every time you brush.

So why is S3 the only one you need?

Instead of choosing between calming or covering, S3 takes a more complete approach to support sensitivity. While other products focus on one mechanism, S3’s formulation is built to complement the way your teeth naturally function, day after day.

For those who’ve tried everything else, it’s a refreshing change.


References 2 sources

  1. Splieth CH, Tachou A (2013). Epidemiology of dentin hypersensitivity. Clinical Oral Investigations. doi:10.1007/s00784-012-0889-8
  2. Prevalence of dentin hypersensitivity: a systematic review and meta-analysis. Journal of Dentistry. doi:10.1016/j.jdent.2018.12.015