[Margaret Port]

Hi Lisa

I recently purchased a cleaning block (which I can't find at the moment) (so it remains nameless) It is a bag made a fine mesh material filled with powdered rubber which is the same material as the cubed yellowish rubbers which crumble into chunky pieces when you use them. I bought it at an art supply store. Picture framers and graphic artists use these blocks to clean up smudges and dirty fingerprints from their work.
Anyway the way to use this (mystery )product is to leave the painting until it is dry and then you squeeze or shake some of the powder out of the bag onto the part you want to clean and it is supposed to absorb it. You could help it by lightly brushing but you don't rub it with your fingers or it will leave a smeary mark. You brush it or blow it off.

I am now going off to clean up my messy art room so I can find this item so I can get back on here and tell you it's name.

Sorry, I'm trying to be helpful. Anyway you shouldn't touch the painting yet, so that gives me a few days to sort the chaos.

Regards Margaret