Check the listing for details. U.S. Art Supply Artist Acrylic Fluid Retarder Medium - 4-Ounce Bottle. Condition: New. Listed at 8.99 USD. > Ordering | Shipping | Returns | International Product Information Part# USA AM-404-4Z Acrylic Retarder Liquid - 4-Ounce U.S. Art Supply Acrylic Retarder Liquid - Is an Additive used to slow down the drying time of acrylic paint, Add to any acrylic paints to slow drying time & increase working time Does not change the consistency of paints - Reduces paint skinning over on palette. Allows for a longer flow when doing Acrylic Pouring Art.Useful for wet in wet techniques. Increases 'open' (working) time of acrylic paint Useful for blending colors. Increased blending time, makes blending of colors and detail brushwork easier Lightweight, non-toxic and dries to a water-resistant, non-yellowing surface View all categories Warehouse LocationsLas Vegas,Nevada South Carolina