Roger, we received a Nubuck chair with a dried Urine stain. We cleaned and rinsed the area and removed some color and the real problem is we removed some of the pebbled finish. Is there any way to restore the original pebble finish. I'm confident we can work on stain further and restore color if needed. But can the finish be restored?

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I have a picture of the whole seat
A picture of untouched grain
and a picture showing half good grain and half of the distorted area.