This is a medium that can be added to paint in order to achieve an impasto effect. It was originally formulated for screen-printing, but it is now widely used in painting. Add 2 teaspoons of thickener per 250ml of paint and use sparingly as this a very effective medium (not compatible with fluorescent colours).

*Paint that has been thickened with Viscosity Thickener should be used within 48 hours or so.