I used Nolvasan on wounds my ponies got from itching their tails raw. The cleanser is essentially colorless and does not produce lots of suds, and so sometimes I unsure if I had missed a spot as I was washing. On the other hand, neither pony flinched as I washed, showing me that the product did not sting. I also noticed wound healing within a few days after the washing, as well as the beginnings of new hair around the area. I plan to keep this product in my my medicine cabinet from now on!