Daler Rowney Art masking fluid is used to create striking white highlights or areas for overpainting at a later stage. Forms a fast drying water-resistant film on water colour paper and board, easily removed when dry by rubbing with an eraser, soft tissue or cotton bud. Note, an old brush, pen or cotton bud should be used to apply the Art Masking Fluid as it is extremely difficult to remove from brushes when dry. Daler Rowney Art Masking Fluid 175ml bottle.