Holbein Masking Fluid Pen 25ml - Holbein Watercolor Blocking Pen 55ml
 Capacity: 25ml
 Features: A pen with color blocking glue inside, convenient for blocking areas of the picture you want to keep white.
 Uses:
 Watercolor blocking glue helps you leave the desired white spaces when painting with watercolors.
 You can use something like buffalo glue to easily remove any misplaced glue once the painting is completely dry.
 Note : Please use a watercolor paper with a durable surface such as Waterford watercolor paper , Arches paper , or Strathmore Imperial paper .
 If using other paper, the surface may tear — test on a test piece of paper first to be safe.