With a fluid consistency that thins all acrylic paint and mediums, this fluid retarder increases the ‘open‘ (working) time of acrylic paint. It also increases blending time, making blending of colors and detail brushwork easier, while reducing paint skinning-over on the palette. Details:4 fl. oz. (118 ml)Archival For use with Liquitex Professional Acrylic Paint colors and mediums