Digital BW, The Print

I've used it for several years to equalize bronzing and to fix inks on
reflective paper. It works very well (if you get a brand with good
atomizer; at a couple of bucks a pop, try many) Oldest prints show no
signs of aging. My understanding is that it is mostly pectin, the
product used to add density to that jar of mint jelly sitting in one
of my pantry shelves since the second Eisenhower administration. It
too shows no sign of ageing.