Surface Tension Breaker is a dispersant and is used to break down the surface tension of the acrylic paints. It acts as a powerful penetrating agent. It is also known as “watercolor medium” or “flow medium”.

Used correctly, it will make Matisse paint more “runny” by increasing its flow properties. Its presence within a water and paint mixture will greatly facilitate color penetration into absorbent paper or fabric grounds, e.g. raw canvas.