Brush-applied masking fluid pools in unwanted spots and creates ragged edges where precision matters most. This pump marker delivers controlled lines of blue-tinted masking liquid exactly where you need it, eliminating the cleanup and inconsistency of traditional brush application. The patented refillable system maintains steady flow pressure, so masking lines stay uniform from first stroke to last, essential for botanical illustrations, architectural details, or any work requiring crisp negative spaces.

Water-based formula dries quickly without stiffening paper fibers, then rubs away cleanly within two days of application. The blue tint provides instant visibility against white or light surfaces, letting you track masked areas accurately as you build complex compositions. No residue, no staining, no surface damage when removed properly. The marker format means you can mask fine details, controlled edges, or flowing organic shapes with the same tool, adjusting pressure and angle rather than switching between brush sizes.

Refillable construction extends the marker's working life indefinitely. Simply add more GRAFX masking liquid when the reservoir runs low. Watercolorists gain sharp white highlights without scraping or lifting; mixed media artists protect collage elements during subsequent paint layers; illustrators reserve precise linework beneath washes.