One did - it was a horrendous wound on her neck (not my horse, but a friend's). She's got a scar to this day, but it's not that bad. I think Camrosa helped a lot.
My old horse had very bad sweetitch and it cleared it up a treat. I also use it on cuts and dry skin, whatever is in it, really helps to clean the skin and aid healthy skin regrowth.
Old mare had a sarcoid on near her eye
Gave it a go before doing the expensive vet route, i didn't think it would work but it disappeared within a few weeks.
Fab stuff if you ask me