Sennelier Acrylic Gloss Medium and Varnish 120 ml Pouch (Made in France) Size:Gloss Medium and Varnish 120 ml   Sennelier acrylic acrylic mediun & gloss varnish 4 fl/oz 120ml.It can be used as a varnish and/or as a fluid shiny medium.As a medium: it improves the adhesion of the film and increases the shininess.As a varnish: it protects the work.