key takeaways
- Foaming agents in toothpaste, known as surfactants, lower surface tension to create the lather you feel while brushing.
- Each foaming agent has a distinct profile and foaming effect, including sodium lauryl sulfate (SLS), sodium laureth sulfate (SLES), and sodium cocoyl glutamate (SCG).
- The surfactant in your toothpaste matters; choosing a naturally derived option like SCG aligns with a clean ingredient oral care routine.
For some people, it’s a fun side effect of brushing; for others, it’s a sign of a thorough clean. But what makes toothpaste foam up, anyway? Does the foam actually contribute to cleaner teeth or healthier gums?
The driving forces behind that lathered smile are the foaming agents in toothpaste, otherwise known as surfactants. This guide explores these compounds to showcase their unique properties and how they benefit your oral care routine.
the science behind toothpaste foam
Surfactants are detergents, but their key role in toothpastes is as foaming agents. They comprise dual-action molecules, each containing a water-loving (hydrophilic) head and water-repelling (hydrophobic) tail. These molecules work together to lower the surface tension of the toothpaste formula, allowing air into the mix and creating foam.
The foam can help loosen and lift food particles, plaque, and other debris, allowing it to be rinsed or brushed away. The type of foaming agent and its strength determine the lathering effect and how it feels. Milder foaming agents are often preferred for their gentler feel and clean ingredient profile.
common foaming agents in toothpaste
While surfactants make toothpaste foam, the most common ones have different profiles, contributing to the way they lather and affect the mouth. The most common foaming agents are sodium lauryl sulfate (SLS), sodium laureth sulfate (SLES), and sodium cocoyl glutamate (SCG).
Sodium lauryl sulfate is the most common foaming agent used in commercial toothpastes, as well as many shampoos, bubble baths, and shaving foams. It creates a thick foam. However, recent studies, including a literature review published in the Journal of Dentistry (2023), suggest SLS can act as an irritant, triggering canker sores.
Sodium laureth sulfate is also a foaming agent popular in toothpaste and is created from SLS in a process called ethoxylating. The process increases the size of SLS molecules, making them less likely to penetrate the skin or oral tissues, producing a gentler experience. SLES is said to produce a creamier lather and milder experience.
Finally, sodium cocoyl glutamate is an amino acid-based surfactant, naturally derived from coconut oil and fermented corn or fruit glucose. Its lather is fine and creamy and designed for biocompatibility with your mouth. It’s mild and often found in gentler toothpaste brands, especially brands like Davids that care about their ingredient quality and sourcing.
the role of sodium cocoyl glutamate in Davids toothpaste

Davids uses SCG in its products because it creates a rich, creamy lather that’s recognized as a non-irritating and non-sensitizing foaming agent in toothpaste, as reviewed and verified by a literature review published in Dental and Medical Problems (2022). The review authors also noted the biocompatibility with oral cavity tissue.
Beyond its compatibility and ability to make Davids toothpaste foam reliably, SCG is a vegan ingredient. Produced from coconut oil and corn or other fruits, it doesn’t use animal-derived ingredients, nor is Davids SCG tested on animals. As a Leaping Bunny certified company and EWG VERIFIED®, Davids products must meet and uphold strict standards, ensuring every ingredient is rigorously vetted for safety and transparency.
foaming agents and your oral care routine
The right foaming agent depends on your dental needs and possibly your convictions. SLS and SLES surfactants are common in commercial toothpaste brands. SCG is growing in popularity, especially among brands that prioritize clean ingredients.
Davids is a brand that prioritizes naturally derived ingredients that complement a vegan friendly approach. We use premium ingredients to create products that are cruelty-free and Leaping Bunny certified. When it comes to foaming agents in Davids toothpaste, SCG is the choice.
Are you ready to experience the Davids difference? Then, trust nature to brighten your smile and choose Davids.
frequently asked questions
is foaming toothpaste safe?
Whether foaming toothpaste is safe for you depends on your specific dental needs and the surfactants or foaming agents in the toothpaste. Some brands use sodium lauryl sulfate (SLS), which a literature review published in the Journal of Dentistry (2023) argues can cause canker sores and tissue irritation. Davids uses sodium cocoyl glutamate (SCG) because it is a gentle, naturally derived foaming agent, making it well-suited to daily brushing.
does more foam mean cleaner teeth?
No, the quantity of foaming agents in a toothpaste aren’t necessarily the mark of a quality product. A surfactant and foaming agent, such as sodium cocoyl glutamate, complements the overall toothpaste formula. It helps that formula cover the teeth and gums, allowing other ingredients like nano hydroxyapatite, calcium carbonate, and hydrated silica to get to the areas where they can do the most good. In other words, it isn’t the ingredient by itself, but acting in combination that helps.
is sodium cocoyl glutamate vegan?
Sodium cocoyl glutamate is what makes Davids toothpaste foam, and it is, indeed, vegan. The ingredient combines fatty acids from coconut oil with fermented glucose from corn or other fruits. It’s not a synthetic compound and provides a gentle, even lather to help toothpaste formulas cover the teeth and gums.
is sodium cocoyl glutamate safe?
Yes, according to the latest safety assessment of amino-based surfactants published in the International Journal of Toxicology (2017). The authors, a panel of cosmetic ingredient review experts, found that sodium cocoyl glutamate (SCG), a foaming agent in toothpaste and personal care products, is safe for use, including in products designed for mucous membranes. As always, research the credentials and certifications of any toothpaste brand you choose.




