Use with Matisse Flow Formula Acrylic colours for a thicker and more transparent consistency. Also can be used for additional painted finishes and various marbling techniques.For painted finish techniques, mix medium with acrylic colour and apply with a stiff brush. Very effective patterns can be created by the use of sponges, erasers, combs, squeegees, rags, stencilling brushes, plastic wraps etc.Marbling Gel may also be used in marbling processes to keep the colours from mixing together whilst at the same time creating colour effects from opaque to transparent. This medium is also called a scumble glaze or scumble medium.