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 been ...

An inspection this year of a Tom's of Maine's facility in Sanford, Maine, turned up several violations, including bacteria in water used to make toothpaste, bacterial growth in another type of ...