Help with dog paw pads!?

For the past few months, my dogs paw pads have not been normal. They seem to be rubbing off. They are not black like they used to be, they are pink in some places now. They also seem really dry and cracked. I have tried bag balm, tuff foot, triple antibiotic, paw pad cream, and nothing helps! My vet is no help we have been there twice and they first told me it was a pigment change, then they said not to walk her on cement. We used to walk everyday, and now I am too afraid to walk her. It has ben a month since we walked last so I know its not the cement. I feed her holistic food (chicken soup). Sometimes she paws at her eyes so I dont know if its allergies maybe? Please help!