Winsor & Newton Watercolour Permanent Masking Medium 75ml

Description:
 
A non-removable, water repellant liquid wax designed for masking specific areas of paper, making them resistant to water.
When dry, the medium will repel superimposed washes.
Excellent for detail.
Apply directly to the paper or tint with small amounts of watercolour.
Allow drying completely before overpainting.
Quantity: 75ml