Daler-Rowney
Art Masking Fluid

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