The shoe cream contains a fair amount of dye. It made the seats look very presentable - not restored to original condition but definitely shiny, supple and removed most of the worn out areas.

The shoe store where I bought the polish recommended two coats a week apart followed by a treatment of a leather conditioner with a UV blocker.

Then an annual treatment of a coat of polish plus conditioner. Conditioner only needed if you actually take the top down (if a roadster).

And of course do not get in the car with light coloured clothing just after you've done this chore!