Daler-Rowney Art Masking Fluid is used when creating your watercolour artworks to create striking white highlights or areas for overpainting at a later stage. The medium forms a fast drying water-resistant film on watercolour paper and board, allowing you to mask certain areas of your canvas. It can be easily removed when dry by rubbing with an eraser, soft tissue or cotton bud.An old brush pen or cotton bud should be used to apply the masking fluid, as it is extremely difficult to remove from brushes when dry.175mlFor watercolourUse to create highlights or overpainting Creates a fast-drying water resistant filmPeels off when dryDaler-Rowney Art Masking Fluid 175ml