Unfortunately, the texture of impasto paintings makes them rather difficult to store, conserve, and restore. Oil paint notoriously takes a long time to dry, and with every extra millimeter of ...

Image caption, Noon, or The Siesta, After Millet, Vincent Van Gogh, 1890, oil on canvas (Peter Horree / Alamy Stock Photo) Applying thick areas of paint on a canvas like this is known as impasto.