The Zellen Art Masking Fluid is a high-quality liquid latex compound manufactured locally in South Africa to protect specific paper surfaces during intensive watercolour sessions. It flows smoothly over untouched paper substrates, drying into a temporary, water-resistant rubber barrier that shields the grain from overlapping ink or paint washes. Once your surrounding artwork is completely dry, the elastic coating peels or rubs away cleanly with your fingertips to reveal pristine, hard-edged white highlights.