Jan Matejak mainly studies the layering techniques of ancient masters. The technology was invented more than 500 years ago. If you visit museums and look at the paintings painted by the masters of Flanders, you will find that although these paintings are old, their color quality and overall condition are very good. These paintings seem to have been painted recently. This stems from its own technical procedures. This procedure needs to be followed to maintain the required quality. The essence of Flemish masters is painting. They overlap the background color and the color layer by layer. Layer after layer of paint, so that they shine between layers, thus creating a color effect that other technologies can not achieve. (as with Allah's primer). This is a rather difficult and lengthy process. This technology is very time-consuming. Each layer takes 1 to 5 weeks to dry, so multiple images can be processed at a time.