Liquitex Slow-Dri Fluid Retarder is a fluid that slows the drying time of acrylic paints and mediums by up to 40%. An absolute essential additive if working in hot or drier climates.   Extends the open time of your color/medium so it is blendable and workable for longer Maintains the same level of transparency Lowers viscosity Ideal for dry and hot climates How to use   Fully intermixable with all Liquitex products Start by adding up to 25% of Slow-Dri to your color/medium Stir slowly to mix well, and use If you're working over a long period of time, mix into color on the palette to keep it fresh and skin-free for longer As this is an additive – with no acrylic binders - do not add more than 25% to your color/medium and do not mix with other additives. This can cause the acrylic film to break down, leaving it sticky and prone to shrinkage Do not use with any non-acrylic media Use with Liquitex Heavy Body Acrylic and Liquitex Soft Body Acrylic colours.