5. Eucalyptus Oil
Eucalyptus Essential Oil is obtained from the fresh leaves of the Eucalyptus tree, native to Australia. It has antiseptic, antiviral, and germicidal properties, and in recent studies, eucalyptus oil was found to be highly efficient in reducing the herpes simplex virus type 1. Put 2-3 drops on a cotton swab and dab on cold sore. Let sit for 1 minute then dab off with water. Repeat these steps 2-4 times daily until cold sore diappears. Note: For people with allergic skin sensitivities, Eucalyptus Oil may cause airborne contact dermatitus, which can be very uncomfortable or even dangerous.