Canker sores are vexing and common. The reason they occur isn’t clear, but your toothpaste could be a factor. An ingredient often used to make toothpaste foamy, sodium lauryl sulfate (SLS), has ...

An ingredient often used to make toothpaste foamy, sodium lauryl sulfate (SLS), has been associated with canker sores in some studies. Researchers have found that people who switched to an SLS ...

Methods: Six patients with AD were patch-tested with occlusive polyethylene wrap and sodium lauryl sulfate (SLS) in standard Finn Chambers taped to noninflamed skin of the back. Cytokine and ...

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With so many toothpaste brands out there that make so many promises, it may not have crossed your mind that any of their ingredients could be harmful. While your focus has been on getting your teeth ...

The ingredient is sodium lauryl sulfate or SLS. Experts caution that the studies are small and that more trials are needed to better understand how the ingredient may affect canker sores.