[s-cars] Leather colour restorer?

[Tony Curran]

Seems there is something in my wife's perspiration that is causing the
colour to fade on the leather. Two areas where bare skin is against the
leather is now turning white: the door armrest and the extension of the
seat.

Is there a way to restore the orginal black colour? Saw somthing on Ebay a
while back but doesn't seem to there anymore.

Thanks

Tony
96 S6