What Is SLS in Toothpaste – and Why Some People Choose SLS Free
If you’ve ever noticed how some toothpastes foam heavily while others don’t, the difference often comes down to one ingredient: SLS.
SLS stands for sodium lauryl sulfate. It’s a cleansing and foaming agent commonly used in a wide range of everyday products, including toothpaste, shampoos and body washes.
What Does SLS Do?
In toothpaste, SLS is used mainly to create foam and help spread the product around the mouth during brushing. That foamy texture is something many people associate with a “clean” feeling.
It’s important to note that SLS itself isn’t what cleans teeth or supports oral care routines - its role is largely about texture, mouthfeel and product experience.
Why Do Some People Avoid SLS?
Although SLS is permitted for use in cosmetic and oral care products, some people choose to avoid it based on personal preference.
Lower‑foam toothpaste can feel:
- Less intense during brushing
- More comfortable for regular use
- Simpler in terms of formulation
For many, choosing an SLS‑free toothpaste is about selecting products that align with their ingredient preferences rather than seeking a specific outcome.
SLS and Our Ingredient Standards
At Red Seal, we place a strong emphasis on authenticity in how our toothpastes are formulated. We believe that what goes into everyday products should be carefully considered, clearly defined, and aligned with recognised standards.
All Red Seal toothpastes are SLS‑free and NATRUE‑certified natural. This reflects our commitment to formulating with ingredients that meet the criteria of a respected natural certification framework, rather than simply following trends or conventions within the category.
The NATRUE Standard sets strict requirements around ingredient origin, processing and acceptability. Because sodium lauryl sulfate (SLS) does not meet NATRUE’s criteria, it is not included in our toothpaste formulations. Choosing to work within this standard is part of how we ensure consistency and integrity across our range.
For us, being NATRUE‑certified isn’t just a label - it’s a reflection of our approach to formulation and transparency. It allows people to choose Red Seal toothpastes with confidence, knowing that the ingredients have been selected deliberately and in line with a clear, independently verified natural standard.
Choosing What Works for You
Understanding ingredients such as SLS can help people make more informed choices, but there’s no single toothpaste that suits everyone.
Whether you prefer a low‑foam experience, simpler formulations, or products that align with natural standards like NATRUE, SLS‑free toothpaste offers an option that fits easily into a regular oral care routine.
Toothpaste choice ultimately comes down to what feels right for you and what you’re comfortable using consistently.
