With the addition of Lascaux Medium Matt the surface sheen will become more matt. Due to its large particle size, this medium is not suitable as a protective finish. The dry surface is not scratch resistant. Medium Matt as well as Medium Satin Matt can be used in a mixture with Lascaux Medium Gloss to modify the desired degree of sheen. Medium Matt is very suitable for glazes on concrete. By adding acrylic colours, any desired tone of a matt glaze can be created. Colourless primings on canvas for subsequent acrylic painting can be done with Medium Matt.