About gouache and painting techniques

A high quality gouache paint is a mix only of pigment and gum arabic.
Gum arabic and dextrin are binders for the pigment. More liquid or less liquid depending on the amount of water.
For low-budget versions of gouache paint may have chalk added to the pigment.
Composition of paint and its density will affect the use techniques.
Using special techniques of gouache painting are obtained excellent painting effects.