After my surgery, I have tried many ointment produces, even some of the most expensive one in the market, with no significant improvement. Then I bought this A and D ointment because my friend S.R. recommended it and their family use it for generation. Upon trying it and it does what it said in the product description, after few days of using it, my butt wound starting to heal, how do I know that? Because it doesn't hurt as much any more. I believe this may have to do with the first-aid additive within the ointment itself.