Utrecht Watercolor Medium - Watercolor Paint Masking Fluid, 118 ml bottle

Use Utrecht Watercolor Art Masking Fluid to preserve painted or unpainted areas in your watercolor artwork. For best results, paint on the removable masking fluid with a disposable brush and let the mask dry completely before working with watercolors. When your painted surface is dry, easily remove the mask with a rubber cement pick-up or soft eraser.