When added to acrylic paint, Acrylic Gel Mediums modify the paint handling characteristics, appearance or volume to produce an infinite variety of effects. Acrylic Gel Mediums can add texture, enhance colour and increase transparency within your work. Gels also add "open time" 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. Modeling Pastes are thick acrylic gel blended with marble dust for a strong durable, opaque texture.