I emailed
www.leatherique.com, and they replied the following:
"I would definately recommend at least a pint of the Rejuvenator and Prestine Clean, both on sale for $35. The Rejuvenator is a professional, leather specific protein collagen complex that will be absorbed directly into the hide to restore tensile strength, luxurious suppleness, and good health back into the leather, and expel dirt to the surface where it can be cleaned away with your Prestine Clean. "