Holbein Medium - W466 Masking Ink
55ml in a glass jar
Mask your artwork for parts you don't want to paint. Itquick drying and provides excellent coverage.
Apply the masking ink directly to the artwork using a brush or pen. It can be thinned with water if needed. Wait until the masking ink is dry before painting .Use an eraser to remove the masking ink after paint is completely dry.