Foxing can be treated well without compromising the paper support or pigments. To a certain extent, it can be treated by utilising specific washing treatments which flush out the polluted acidic elements on the paper. However, usually to remove foxing completely you need to use a conservation standard bleaching agent.

How do you clean old paper prints?

Damp cloth: If the dirt stain is stubborn and cannot be brushed away, a damp cotton swab or microfiber cloth works pretty well. Hold the print vertically and rub the blemish gently. Wipe off the moisture with a dry cloth and place the artwork in direct sunlight for quick drying.

How do I get rid of foxing prints?

Foxing stains can be removed by bleaching with chlorine bleach or to use what is common household bleach (Sodium Hypoclorite), which has a very high alkalinity and so damages paper fibers easily.