Liquin will approximately halve the drying time of an oil colour, depending on the proportions added. The climate, colours used and film weight will also play a role in the timings, so the layer will be touch dry in between one and five days.
Using Griffin Fast Drying Oil Colour will reduce this time further. Liquin is the best medium to use with this range, and will allow the paint to be touch dry overnight or sooner.
An important rule to remember is that each new layer applied must be slower drying than the previous one. For this reason many artists choose to build up their lower layers using Griffin and then revert to Artists’ Oil Colour for the upper layers. Griffin can be varnished after drying for three months.