20 Natural Remedies for a Cold Sore
Apple Cider Vinegar
Apple cider vinegar is a popular treatment for cold sores because of its ability to fight off bacteria, viruses, and other germs.
Make sure you dilute the apple cider vinegar with water when using it to treat a cold sore, though. It's too intense and can seriously irritate your skin if not diluted. Apply once or twice each day until the cold sore is gone.
