GAC 800  Reduces Crazing in puddles, pours, and other thin, pourable paint applications. "Crazing" is the formation crevices in surfaces that develop as acrylic paints and mediums dry. The addition of GAC 800 promotes drying with a smooth, even film, good gloss and flexibility, but with moderate clarity. GAC 800 is also useful for adhesion to chalky surfaces. 

Golden Acrylics GAC 800/Colour Pouring Medium