Cold Sores are truly a painful nightmare. This toxin free all natural treatment is extremely potent. Lemon Balm is a proven cold sore killer and with the help of antiviral Usnea, it’ll prevent spreading and stop it in its tracks. You’ll also fine pain relieving herbs inside to help soothe the pain of already present cold sores. Apply to a q-tip or finger and apply to the area most needed! Avoid putting the tube directly on a cold sore to prevent spreading in the future.