Open acrylic gel is the same consistency as Open acrylic colors and is used to extend the paints while maintaining working properties. Mix any quantity of gel or medium with Open acrylics in order to extend the paint or modify its sheen, viscosity, or transparency. The joy of Open acrylics and mediums is that they can be worked for extended periods of time which is excellent for blending, getting clean edges, and for detail work.Throughout the painting process, the paint viscosity will pass through several stages: at first it will be as it comes out of the tube, and the paint tack will slowly increase, in which case subsequent applications of any Open products or water can continue to reopen layers and allow the artist to continue blending.The Open series are best used in thin layers. Applications of more than 1/16 will result in: excessively long drying periods, persistently soft, higher tack feel, and translucent layers that remain cloudy. If it is necessary to apply paint in thick layers, it is recommended to use Golden Heavy Body acrylics.