How do I remove blue jean dye transfer from light leather seats?

Act early: fresh dye transfer usually comes off with a dedicated leather cleaner and a soft brush, worked gently and wiped with a clean towel. Older transfer may take several careful applications. Avoid harsh solvents, magic erasers and strong all-purpose cleaners, which can remove the leather's protective topcoat and color. Test any product in a hidden area, and consider professional help for stubborn or deep staining.

References
  1. Leather, Wikipedia
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