Schmincke Aqua-Mediums Masking Pen

The Schmincke Aqua-Mediums Masking Pen is designed for the direct and accurate application of masking fluid allowing for the masking of fine details. Masking fluid enables the painting surface to remain clear with the addition of Watercolour or Gouache. The Masking Pen is available as a 25ml bottle containing coloured (blue) or colourless (white) fluid. Surfaces should be dried before use and masking fluid should not be left on the paper for longer than two days.