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How can i get Yellow discoloration around my Dogs eyes and ears out of her fur, I have a White German shepherd - discoloration around dogs lips

I have a pure white German Shepherd. I bathe them a lot, but only the body that cause the soap would get in his eyes. I use whitening shampoo for dogs and works well in his coat. But it discoloation yellow around the eyes, hair and ears .. How do I remove it? My vet told me to a place that I will not pay to try perpetrators,