I had a mark inside my pochette and at first I used water but it didn't come off so I think it was like an oil stain. Then I used a drop of detergent and mixed it with water and gently applied it to the area and voila, it came off
A gentle cleanser (like the stuff you use for panty hose) mixed with a little water and applied with a clean cloth does wonders! Then use a clean damp cloth to remove the cleanser, prop open and let air dry. Good as new!
The detergent I use is normal dishwashing detergent, lol
& I was recommending it for the normal mono pochette (brown interior), not the other interiors.
