The purpose of this Talens film is the temporary masking of sections in a water colour painting.
 
Composition: dispersion of natural rubber in water
Prevents adhesion of water colour to areas of the painting that are treated with the Liquid masking film.
Dries in 10 minutes.
Once dry it can be removed with the fingertips or an eraser within a few days.
Becomes more difficult to remove after some time.
Can cause discolouration on cellulosic paper.
Can also be used for water-based inks.