There's several different essential oils that work to get rid of cold sores but the best essential oil that tops the list for getting rid of cold sores is Tea Tree Essential Oil.
Since Tea Tree oil is antiviral, antiseptic and has anti Inflammatory properties which can help kill off the cold sore virus which is the herpes simplex virus.
Other good essential oils that will also work to get rid of cold sores are, Chamomile, Peppermint Oil, Lemon Balm Oil, Ginger Oil, Thyme Oil, Oregano Oil and Anise Oil.
You can also apply Apple Cider Vinegar to the cold sore from 2 to 3 times per day which can get rid of cold sores as well.