This Glaze medium from C. Roberson & Co can be used with Oil colour to produce thin glazes, aid fine detail work & smooth brushwork. It increases the flow & translucency of Oil colour. The inclusion of Strontium – a Cobalt dryer alternative, acts in speeding up the drying of Oil colour making up the perfect choice for those working with Oil in building up colour in successive layers. UK shipping by road only. Not available for International or Northern Ireland delivery.