Fresco is the ground pigment in which painting material combines with a linseed oil vehicle and turpentine medium.
Fresco is a type of ancient painting where color is applied to a wet lime plaster surface while being suspended in alkaline limewater. Fresco is not to be confused with a patina layer that is put on dried plaster or limewash. They are known as Secco applications. Fresco must be applied while the plaster is still damp and is only intended for use on pure lime plaster.
It cannot be applied to plaster that has dried, cement, lime with cement, or lime stucco (also referred to as lime stucco). The coloured limewater will carbonate with the wet plaster throughout the curing process after being applied to it, becoming a permanent part of the lime plaster surface. Fresco as a painting material can be utilized inside or outside.
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