Liquitex Basics Acrylic Mediums Set includes five tubes of popular mediums to add texture and visual effect to your acrylic art. Gloss Gel Medium is excellent for retaining brush marks while slowing the drying time and adding body to the paint. Modeling Paste is a very thick, matte, opaque preparation of marble dust and polymer emulsion used to build heavy textures on rigid surfaces. Gesso is a classic white sealer and ground for absorbent surfaces, such as canvas, paper or wood. Iridescent Medium adds richness to acrylic colours by creating a metallic/pearlescent effect. Coarse Texture Gel contains specific aggregates and produces a variety of unique textural, dimensional and reflective effects when mixed with acrylics.