Use to remove old and/or dried-on masking fluid from brushes, clothes and equipment. This method works well for brushes ‘stiff’ with masking fluid. Soak the brush in a small amount of Zest-it Masking Fluid Remover for about fifteen minutes, it should look soft and feel ‘gooey’ to the touch. Gently roll the filaments between your fingers with kitchen towel or similar to loosen the masking fluid. Remove the ‘gooey’ masking fluid then wash the brush in Zest-it. Repeat as necessary.