What to use to recondition leather seats?

I just bought some used black leather seats and some of the leather needs a little work. What is best to use on the seat to get rid of oil, miscolored ares? Thanks!

Post pictures if you have any

LABEL REMOVER. WITH THAT SAID TAKE A TOWEL AND POUR IT ON THE TOWEL NOT THE SEAT IT SELF. DO NOT I MEAN DO NOT RUB REALLY HARD. IT WILL PULL THE DYE UP. ALSO YOU CAN TAKE A CARPET BRUSH (ALMOST LIKE A TIRE BRUSH) WRAP A TOWEL AROUND IT AND PUT SOME CLEANER SOAP ON IT THE TOWEL. AND RUB IT OVER WITH THE BRUSH EITHER WAY. BUT WHICH EVER ONE YOU USE DONT POUR ON SEAT BECAUSE IT WILL SPOT THE SEAT AND MISMATCH THE DYE

Thanks! I will try it and if it helps.

Has anyone used any thing from Mothers or Meguiars?

you can get the label remover from a napa store but remmebe just slightly rub it out cause it will soak and bring the dirt up on its own once you start scrubbing it will pull the dye up.. just work with it and it will eventually work with you if that makes since.. pateince. ivebeen detailung cars 5 years and thats the best shit to use long as you dont scrub