Liquitex Gel Mediums - Liquitex Gel Mediums are on the opposite side of the spectrum from Fluid Mediums. Gel Mediums add body to thinner paint for impasto techniques as well as extending color volume and adding transparency. Gels also add ôopen timeö as they tend to dry slower than thinner paint films. These mediums also modify acrylic paints in a variety of ways and, since they contain acrylic resins, tend to improve adhesion and durability. Liquitex Gel Mediums include: Flexible Modelling Paste, Gloss Gel, Gloss Heavy and Super Heavy Gel, Light Modeling Paste, Matte Gel, Matte Super Heavy Gel, Modeling Paste, Slow-Dri Blending Gel, and Ultra Matte Gel.