Look up Zymox products, they have shampoos, conditioners, and sprays. It is an enzyme product that deters bacteria and fungus. I have used them on my dog who gets skin infections easily because her endocrine system self destructed and she doesn't grow coat.I knew about the six month issue as my vet told me when I first took him in but momentary forgot. Restore shampoo is a brand name for a treatment of mild skin infections with the ingredients suggested by Dr Ed. But somehow it got worse than mild. But now I will get on it more quickly with the shampoo if I see even a hint of infection. Or stay on a routine of application.