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Is your toothpaste causing mouth ulcers?

19/03/2018 by Hannah

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sls free toothpaste

Suffering with mouth ulcers? These painful sores can erupt overnight and make speaking and eating an uncomfortable experience. With no quick fix available, these irritating lumps can linger in the mouth for as long as three weeks, but there are some steps you can take to help them on their way.

This #WorldOralHealthDay, we reveal our top tips to prevent mouth ulcers from giving you teething troubles.


Our mouths are one of the most sensitive areas of the body, and the delicate skin in and around the mouth can be easily aggravated by harsh chemicals such as Sodium Lauryl Sulphate (SLS). Often used in high-street toothpastes to help them foam in the mouth, this chemical concoction is a known contributing factor to recurring mouth ulcers with one study revealing that sufferers experienced a 60% reduction in their symptoms by simply switching to an SLS-free toothpaste.

A relatively simple step, going SLS-free is so effective that even the NHS recommends switching to a SLS-free toothpaste to help accelerate the healing process, reduce mouth ulcer pain and to prevent mouth ulcers from coming back[i].



When the mouth is inflamed by ulcers it can make eating and drinking uncomfortable and the NHS suggests that sufferers stick to soft foods, forgo fruit juice and sip cold drinks through a straw[i]. Swirling medicated mouthwash in the mouth may help to ease the pain, but before you splash out on a painkilling product why not try a natural approach?

Sage and sea salt are two natural ingredients that are known to have antiseptic properties as well as the potential to reduce inflammation and accelerate healing. To make a natural mouth ulcer treatment pour a cup of boiling water over one tablespoon of sage leaves, cover and steep for 15 minutes, strain the formula and then add two teaspoons of sea salt before refrigerating. Once the formula has cooled, rinse it around the mouth twice daily after brushing your teeth, taking care not to swallow it.


Have your mouth ulcers been bothering you beyond three weeks? The cause of mouth ulcers can vary and there are many factors that can cause ulcers to remain in the mouth beyond three weeks. According to the NHS stress, poorly fitted oral devices and health conditions such as IBD and Coeliac disease can all cause prolonged mouth ulcers[i].

Mouth ulcers can also be a symptom of mouth cancer, so for this reason, if your ulcers have not disappeared within three weeks it is important that you consult your dentist for guidance on how to best manage your symptoms.

Do you experience mouth ulcers from high-street toothpastes? Has changing to an SLS-free toothpaste helped? Let us know by using #GreenYourRoutine on social, or leave us a comment below.


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