Oil of Oregano definitely helped me clear some of my lesions. But it should be wild oregano, not regular oregano. It comes in oil form which I use on my skin. In US, the best quality oil of oregano is produced by North American Spice & Herbs. You can find this brand in your local health food store like Whole Foods, or order it online at a discounted prices, like from vitacost.com.
I used the super strength oil from North American Spice&Herb. It definitely helped me a lot. It was expensive though, so I could not afford to buy a second bottle. Now I got some wild oregano oil from Turkey and I am using it with great success. It is very strong, even stronger than the super strength formula by North american spice & Herb. So I am diluting that oil of oregano that I got from Turkey.