Hi, I've used activated Miracle-Mineral-Supplement on cold sores (herpes outbreaks) on my face. (I always get them inside my nostrils.) I've found the Miracle-Mineral-Supplement helps a bit, but does not seem to shorten the duration of the outbreak by very much.
(When I was taking Miracle-Mineral-Supplement internally I didn't have an outbreak for a whole year, mind you, which is a long time for me.)
But topically, it wasn't massively effective for me.
What I did find that is VERY effective, is putting Bentonite clay on the cold sore. Cover the entire outbreak with Bentonite clay several times a day if possible and it dries it up and makes it go away within a day. You may find the scab takes another week or so to heal, but that's to be expected.