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One of the famous painting medium on use is oil paints famous for the look and originality that the oil paint brings in to the paintings. The oil used in painting kept on changing keeping in mind various factors of viscosity, solubility, comfort ability, the color required for the painting and the drying time. Some oils used in historical periods could be flax, walnut, Olive oil or poppyseed oil but the drying time was long for these oil paintings and in the case of olive oil it was excessively long which brought in usage of drying oil as a varnish on oil paintings.

Painting Mediums
Paint and paintings materials differ depending up on the place where it is to be painted whether it is an interior painting or exterior. Interior paintings basically use materials such as oil paint, water colors, wooden board, fabric etc where as exterior paintings involves using water resistant base and mediums.

Grisaille Paintings
Grisaille is not a paintings type by its own but an initial step in oil painting. It is the step representing lighter shades of the image to be painted. This type grisaille grey is basically a painting in lighter grey shade (followed as per the rules of oil painting the darker painting section follows the lighter colors to be implemented in oil painting) before the whole painting is all done. This painting is executed entirely on monochrome in various shades of grey which can also be used for decorative purposes such as representing an object in relief.