This Hack For Treating Cold Sores Has Saved Me So Much Money on Over-the-Counter Meds

Because many toothpastes include sodium lauryl sulfate — an ingredient that helps dry out cold sores — in their formulas, it can help speed up healing time. While using toothpaste to help heal a fever blister hasn't been officially studied, there's enough anecdotal evidence to give it a try. To start making your ointment, put a healthy squirt of toothpaste into a small bowl or ramekin.