Herpes simplex virus 1 also more commonly known as cold sores was recently studied and written about in Aromatic Science showing that applying Peppermint Oil topically to the infected area will destroy the virus and prevent recurrent infections! (Read Article Here) Peppermint Oil is anti-inflammatory which means that it will shrink the cold sore and it is anti-bacterial which means that it will kill the virus. Purchase your Peppermint Jim’s Peppermint Oil (Here) Remember…not all Peppermint Essential Oils are created equal. You can trust that Peppermint Jim’s peppermint oil is 100% pure essential oil. Our non-adulterated oil is grown, harvested and distilled by us! Nothing has been taken out of the oil or put in. When you buy from us you know that you are getting the real deal.