Which we got for the mastiff's hot spots.
Let me tell you, not only is it *sovereign* for infected cat scratches (It turns out my flesh-eating bacteria wasn't weirdly localized sunburn after all, but a cat scratch on my lip--Thank you, Mr. Fish-Hook Feet), but this stuff kills zits like nothing else under the sun.
Now I know why you never see a veterinarian with bad skin.
(We have a long history around here of using vet drugs on humans, I fear. Shhh. Nobody tell the FDA.)