Pouring Medium is a fluid additive specially formulated to enable paint to flow easily across a surface. It thins paint to the ideal consistency, creates cell effects, and reduces cracking and crazing. It will not slow down the drying time, alter the color, or lessen the adhesion of paint. Mix with Americana Acrylics or DecoArt Media Fluid Acrylics to create stunning effects on canvas, wood, or other art surfaces. Ratios can be adjusted for a variety of effects. It is water-based and non-yellowing. Bottle contains 473ml (16floz).