Oregano Herbal Remedies

I use Oil of Oregano for cold sores, the second I feel that tingle i put a drop or two on the area that is tingleing and repeat a few times through out the day for about 2-4 days, it never blisters and breaks out, in fact its quickly regressed and dissapears within those days. I have been doing this for over a year and usually get cold sores about 4 times a year, and its worked every time...