Liquitex Fluid Medium Gloss Medium & Varnish 237Ml Liquitex offers a variety of specialty products including Fluid Mediums, Gel mediums, Texture Gels and Additives which have been specifically designed to achieve various techniques, applications and special effects. Liquitex Fluid Mediums perform much in the way that their name implies, they are fluid in nature and reduce viscosity of heavier paints and gels.