UPVC doors, oily black fingermarks - any help?

[eemie]

I've tried something called 'UPVC cleaner' that the salesman gave me, which has a solvent smell - no good at all.

Any ideas O domestic goddesses?

White spirit.

cream cleanser and vigorous rubbing or, as Pinot suggests, white spirit.

white spirit too here! i got so much sticky tape stuck to them once, i was trying to stop a draught, white spirit was the only thing that got it off