This will work:
Mix 1 quart hydrogen peroxide, half a box arm and hammer baking soda, and a big squirt of dawn dish washing soap.
Work it into the dogs fur really good. Rinse and repeat. Don't get it in the dogs eyes.
Unfortunately, I have used it on more than one dog.
This is way too strong and should be diluted with warm water. Just a few drops of Dawn, certainly not a half box of soda and I don’t remember using so much peroxide. Rinse the dog well before applying the mix and again several more rinses after application.
Dewey hates skunks! The first time I used this his skin reacted and scabbed up. The following times I rinsed before and after and all was well. The stuff works immediately.