This thick, gritty texture gel dries to a gritty, sandpaper texture with a matte sheen. Thicken textures and experiment with the surfaces of your acrylic paintings. Use it alone, mix it with acrylic colors and mediums, or intermix multiple texture gels for specific effects. Formulated for maximum flexibility, it can be applied to any material suitable for heavy acrylic painting. Can be thinned with water . Water-resistant when dry Gel Medium or Heavy Gel Medium should be added when using additional substances (like sand) to avoid brittleness, and results should be varnished to avoid foaming or clouding