Oil painting, painting technique widely used in painting. Oil paint, which is obtained by mixing plant oil and pigments as a binder, is one of the most preferred painting materials due to its quality. Although oil painting was first used by Indian and Chinese painters in Western Afghanistan in Buddhist paintings between the fifth and tenth centuries, it did not gain popularity until the 15th century. Its use became widespread in the west during the Middle Ages. As the advantages of oil paint became widely known, it became the main material used in making artworks.