Daler-Rowney Simply Art Masking Fluid is a versatile tool for artists, ideal for protecting specific areas in painting from watercolor washes. This masking fluid comes in a 75 ml / 2.5 fl. oz. glass bottle and can be used to create striking white highlights or areas for overpainting at a later stage. It forms a fast-drying water-resistant film on watercolor paper and board, which can be easily removed when dry by rubbing with an eraser, soft tissue, or cotton ball. Explore the world of artistic possibilities with Daler-Rowney's high-quality masking fluid.