4Cats Frisket Mask Liquid, or masking fluid, is a water based liquid frisket that lets you mask out areas of paper, photos, and other media you want to remain pristine while overlaying applications of colour. When dry, simply remove the frisket by peeling or rubbing it with a soft eraser. It seals well on almost any surface, does not stain, and peels off cleanly without tearing or removing the sizing from paper. This product contains latex. 120 ml.