Ask anyone who’s ever had a canker sore about the utter discomfort of brushing teeth while the ulcer is present. It requires careful manipulation of a toothbrush, and even then, it can still be a painful experience. Worse yet, because many brands of toothpaste contain a special foaming ingredient known as sodium lauryl sulfate (SLS), … Continue reading Toothpaste Without SLS: For Frequent Canker Sore Sufferers