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Egg tempera is not a flexible paint and requires stiff boards; painting on canvas will cause cracks to form and chips of paint to fall off. Egg tempera paint should be cured for at least 3 months, up to 6 months. The surface is susceptible to scratches during the curing process, but will become much more durable after curing.
Oil paint was mainly used as it is today in house decoration, as a tough waterproof cover for exposed woodwork, especially outdoors. In the 13th century, oil was used to detail tempera paintings. In the 14th century, Cennino Cennini described a painting technique utilizing tempera painting covered by light layers of oil.
Acrylic paint is a fast-drying paint made of pigment suspended in acrylic polymer emulsion and plasticizers, silicone oils, defoamers, stabilizers, or metal soaps. [1]
While tempera is one of the oldest forms of painting, dating back to ancient Greece and Rome, it is now a preferred choice mainly for classrooms and kids’ craft projects due to its affordability ...
The paint surfaces of many tempera paintings have become abraded, most likely from routine dusting and cleanings. It is unclear how tempera paintings were originally varnished due to the need for sensitive methods of analysis. Modern tempera paintings are almost always unvarnished and more prone to mold attacks. [22]
One of the qualities for which artists value casein paint is that unlike gouache, it dries to an even consistency, making it ideal for murals. Also, it can visually resemble oil painting more than most other water-based paints, and works well as an underpainting. Casein paint loses its solubility with time and exposure and becomes water-resistant.