MM3 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 “watercolour 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 colour penetration into absorbent paper or fabric grounds, e.g. raw canvas.
It is a very valuable additive in stain painting techniques and water wash applications when working on hand-pressed watercolour paper or absorbent, bleached but unprimed canvas.
For correct results, MM3 Surface Tension Breaker is always pre-diluted with the quantity of water to be used for thinning the paint. It is wise to prepare a stock jar of water with 5-10% MM3 Surface Tension Breaker and use this water for the overall painting.
MM7 Polymer Gloss Varnish (Gloss Medium) and the other mediums such as MM4 Gel Medium and MM9 Acrylic Painting Medium, can also be treated with MM3 Surface Tension Breaker pre-diluted with water. The addition of a level teaspoon of pre-diluted MM3 Surface Tension Breaker to a 250ml jar of Matisse acrylic paint or painting medium will have a very noticeable dispersing effect.
Unprimed canvas which has been scoured and bleached (in order to remove cottonseed oils and seeds) or raw canvas, will perform very much better in stain painting techniques if the cloth is pre-washed in a water-diluted solution of MM3 Surface Tension Breaker. A diluted solution of MM3 Surface Tension Breaker can also be brushed straight onto the stretched canvas and allowed to dry.
MM3 Surface Tension Breaker will also assist with the dispersion of colour when you are employing the paints in a watercolour technique.