What Is SLS in Toothpaste? Why Clean Brands Avoid It

If you’ve ever used a toothpaste that foams heavily, there’s a good chance it contained SLS—sodium lauryl sulfate. While common in conventional formulas, SLS has become a red flag for clean-beauty shoppers looking to avoid irritation and sensitivity.

What Is SLS?

SLS is a surfactant—a foaming agent used in:

• toothpaste

• shampoo

• body wash

• household cleaners

It creates rich bubbles and spreads flavor evenly. But for oral care, SLS isn't required for effectiveness.

Why Many Toothpaste Brands Still Use SLS

• It produces satisfying foam

• It distributes mint flavor

• It creates a familiar brushing feel

But SLS comes with clear downsides for many users.

The Problems With SLS

1. Mouth Sensitivity

SLS can cause irritation in the mouth’s soft tissue.

2. Dryness

It may strip natural moisture, leaving gums or cheeks dry.

3. Canker Sore Concerns

People prone to canker sores often experience improvement when switching to SLS-free formulas.

Why Clean Brands Avoid SLS

Clean-beauty and wellness consumers expect:

✔ ingredient transparency
✔ simpler, safer formulas
✔ less foaming, more comfort
✔ plant-based cleansing agents

Modern clean brands use alternatives that support a gentle yet effective brushing experience.

How SLS-Free Toothpaste Cleans Without Foam

SLS has nothing to do with cleaning. SLS-free formulas rely on:

• hydrated silica

• botanical oils

• xylitol

• aloe vera

• plant-derived cleansers

These create a cleaner oral environment without irritation.

Why Switching to SLS-Free Toothpaste Makes Sense

If you deal with:

• sensitivity

• chronic dryness

• recurring canker sores

• irritation from foamy toothpastes

• or simply prefer clean-label ingredients…

…SLS-free toothpaste is a smart choice.

SLS-Free Is the New Normal in Clean Oral Care

With more consumers aligning daily habits to clean wellness values, SLS-free toothpaste is becoming the category standard—gentler, safer, and better for everyday comfort.