Cold Sores Home Remedies. Cold Sores Treatments

Make a cornstarch paste. A traditional home remedy calls for making a cornmeal poultice for a cold sore, but an easier adaptation is to make a paste of a little cornstarch and water and dab it on the sore a few times a day. Cornstarch neutralizes the pH of the sore (cold sores thrive in acidic environments), which will soothe pain and inflammation.