My Father did a Deer Hide when I was a Kid with straight Sulfuric Acid....Hair On Tan....and I still have a Game Bag...and a small Pouch from this Hide...and it is still white...soft and pliable...without ever being oiled or anything....I think that the main concern would be....to make sure the Hide is neutralized well in a solution of Baking Soda and water until the PH is back up to neutral.....then it should be fine.....JMO