Old Holland New Masters Retarder Gel Medium - 500 ml jar

All New Masters gel mediums can be mixed with New Masters Classic Acrylics and other New Masters Mediums. This gel slows the drying time of acrylic paints. It has the same viscosity as the New Masters Classic Acrylics. - Old Holland New Masters Retarder Gel Medium - 500 ml jarNew Masters Acrylic, RETARDING GEL - This medium slows drying time and keeps colors open and clear. It has the same viscosity as that of New Masters Classic Acrylics. For best results, add no more than 10% retarder to the acrylic paint.