Sodium lauryl sulfate is a type of detergent that produces a lot of foam and is very common in toothpastes and all kinds of oral hygiene products, but it is associated with irritation of the mouth’s mucous membrane. In this article, we will examine whether this ingredient used in toothpastes is truly safe for the oral cavity. If you are here, it means you want to know if the sodium lauryl sulfate contained in toothpastes is safe.
Here is a guide that will help you learn more about sodium lauryl sulfate and why it is advised against using a toothpaste containing sodium lauryl sulfate.
What is sodium lauryl sulfate?
Sodium lauryl sulfate (SLS) is one of the harmful substances commonly used in toothpastes, as well as in many other cosmetic and hygiene products, such as shampoos and body creams. One of its appeals is that it produces a lot of foam.
There is a widespread rumor that this product increases the risk of mouth cancer, but it has been proven that this is not the case.
Characteristics of sodium lauryl sulfate
Sodium lauryl sulfate (SLS) is a surfactant that makes toothpaste foam when it comes into contact with water. Its concentration must be below 0.5% because above that, it can be irritating to the skin. Additionally, it may contain measurable amounts of 1,4-dioxane, a potentially carcinogenic solvent.
Main dangers of sodium lauryl sulfate
Sodium lauryl sulfate increases the risk of canker soresJust because the sodium lauryl sulfate in toothpaste does not cause cancer does not mean it cannot cause problems. Several studies confirm that it acts as an irritant to the mucous membrane of the mouth, increasing the risk of developing thrush, especially in people prone to it.
Research has shown that toothpaste containing SLS causes peeling of the most superficial layers inside the mouth. Some studies link this detergent to gingivitis (gum irritation), in addition to canker sores. Studies also indicate that the intensity of irritation depends on how long the product remains in contact with the mucous membranes or skin.
If you are not prone to thrush or gingivitis, very short-term contact with SLS is relatively safe and should not worry you. If you suffer from canker sores or skin or mouth irritations, it may be wise to look for alternatives.
Sodium lauryl sulfate is harmful to skin and hair
If used daily, it promotes the appearance of blackheads due to overproduction of sebum on the face and scalp. Not only does it damage your face and hair, but it also makes them much greasier at the roots. It also causes dry and brittle hair ends. Furthermore, it accumulates at the hair roots due to its corrosive action. In extreme cases, it can even promote hair loss.
How to avoid sodium lauryl sulfate?
Sodium lauryl sulfate (SLS) can be derived from petroleum or vegetable fats such as coconut and palm. Natural and ecological certifications prohibit petroleum derivatives but allow plant-based ones. Therefore, SLS is a product you can also find in certified products.
Many natural products opt for "sodium coco sulfate" (SCS), which is a more diluted and gentler version. In fact, SLS is manufactured separately from sodium coco sulfate. Research conducted by Canadian health authorities estimates that the amount of dioxane generated is not a health concern. In any case, as a precaution, sodium lauryl ether sulfate is less recommended than SLS itself.
Most conventional toothpastes contain SLS, so the only ways to avoid these compounds are to choose an organic certified product with "sodium coco sulfate" (SCS) or to make homemade toothpaste.
Toothpastes without sodium lauryl sulfate
ESI Aloe Fresh toothpaste
It is sold for 5.45 euros on the SantéDiscount website. It gently cleans teeth without irritating gums or damaging tooth enamel. Its silica microbeads help polish the teeth to brighten them. It allows you to have whiter teeth without harsh ingredients. Indeed, its formula does not contain sodium lauryl sulfate.
Coslys Sensitive Teeth toothpaste
It is sold for 4.45 euros on the GreenWeez website. It is enriched with mineral salts to prevent tooth sensitivity and strengthen enamel. Thanks to a pleasant gel texture and its natural mint flavor, it refreshes your breath. All its ingredients are of natural origin.
Boiron Homéodent toothpaste
It is sold for 2.85 euros at Pharmacie du Polygone. It helps reduce dental plaque and thus contributes to preventing cavities. Thanks to its special formula, Homéodent toothpaste soothes and fights infections, relieves painful gums, prevents cavities, and removes dental plaque without harming teeth and gums.
Y-Brush fluoride-free toothpaste
It is sold for 7.99 euros on the official website. Its fluoride content of 1450 ppm, the dosage recommended by the French Union for Oral Health, effectively strengthens tooth enamel, fights cavity formation, combats dental plaque, and acts against bacteria. Its transparent and fluid paste allows for more effective brush cleaning.
