Liquitex Fluids Slow-Dri Medium slows drying time by 40% while increasing transparency, allowing you to work with your paints for longer and create great color blends without comprising acrylic stability. Ideal for hot or dry climates, mix Liquitex Fluids Slow-Dri Medium with heavier-body paint to lower the viscosity and increase flow, surface gloss, color depth, and transparency.