Acrylics may be used to create effects that imitate watercolors and other water-based mediums when applied in thin layers or washes. Gel and moulding paste are occasionally used to produce paintings with relief elements, and they can also be used to construct thick layers of paint.
Acrylic colors used by professional artists are created and designed to resist chemical reactions from exposure to water, ultraviolet light and oxidization. Acrylic is made up of synthetic polymer
which makes it more flexible as compared to the tempera painting. All these factors makes the acrylic paint more long lasting than the tempera painting.Instead,
Tempera painting produces smooth matte finish with higher color saturation. It can be used for more precise artworks as it enables to use cross hatching technique by various sizes of brushes. Although it produce smooth matte finish, but it requires lots of attention and time, as it is applied in thin layer and each layer must be dried for next layer overlapping.
Egg tempera is water-resistant, but not waterproof. So the paintings made by the paint cannot be stored directly. Also the the painting is not a flexible painting. For this very rigid board is used, and the the paint should be applied in a very thin layer. To make the paint more durable over time, now-a-days, an extra layer of transparent fluids like cellulose lecquor is coated on it.