My white GSD, Max still has the red ring around he neck from a dog collar I had to cut off of him when getting him out of the pound. The dog collar was probably an inch too short for his neck size, so it was on really snug, I couldnt even get fingers through it. Anyway, it's been about 3 weeks since he was pulled from the shelter. I've taken him to both petsmart and petco. Petsmart wanted to shave the fur around his neck and I didn't want that done, petco bathed him for me to see if it would help. The bather ended up doing it for free because she wasn't sure if it would work. He smells amazing but still has the red ring there. Is there a shampoo I can buy (and use safely considering he's just been bathed) i'd only be using it around his neck area. I'd also like a shampoo for white coated dogs, i know being on a proper diet will help his coat out a bit (I feed Solid Gold) im not sure what he was eating before, probably whatever the pound had donated. Any suggestions would be great!