Fresco painting, method of painting water-based pigments on freshly applied plaster, usually on wall surfaces.
The colors, which are made by grinding dry-powder pigments in pure water, dry and set with the plaster to become a permanent part of the wall.
A fresco is a type of wall painting. The term comes from the Italian word for fresh because plaster is applied to the walls while still wet. … In fresco a secco the paint is applied dry, either on top of the buon fresco, which has dried, or on a dry intonaco.