Sponge a weak C6N6FeK3 solution over the prints after you hang the exhibit, and stand back and enjoy.
(Test and find the right ratio/effect first)
As others have said UV light and inadequate fixing help.
I have a drawer full of unfixed stabilization processed prints that are still good, but set them out on a desk for a week and watch them go to brown. I am sure you can find some of this paper (I used to use a lot of it) and mixing the chemistry if you can't find any would be easy.
Last edited by vpwphoto; 12-04-2012 at 02:40 PM. Click to view previous post history.