Acrylic Slow Drying Medium 250ml by Winsor & Newton Artists'
Slows the drying time of acrylic color to give more working time for extended blending and manipulation. A ratio of 1:1 color to additive volume doubles the drying time. Maintains color viscosity and has no effect on the finished color when dry. Maintains no color shift from wet to dry when used with Artists’ acrylic.