It is better for amateur painter to first learn how to use gouache and only after that get to work with acrylic paints, which are the tool for professionals. The difference between these two types of paint lies in several nuances.
Acrylic is less viscous than gouache paint. Besides, it is dense and easier to apply on the canvas. However, it dries quickly and requires dilution with water. The pigment in acrylic is more concentrated, which reduces the consumption of material. After drying, acrylic paints darken, while the gouache becomes lighter.
Another difference between acrylic and gouache paint is that, subsequently, acrylic cannot be washed out by water. It is impossible to wash off the dry acrylic paint from the canvas, or from brushes, or from the palette. Gouache paints, in turn, can be reused if one adds water to it. Thus, such a technique does not work with acrylic.
Speaking on gouache and watercolor as types of paint, then first of all it is worth noting that the basis for both is vegetable glue, which is easily dissolved in water. However, gouache contains more glue as well as the coloring pigment then watercolor.
The main properties of watercolors are the softness and transparency of the paint layer, which emphasize the naturalness of color transitions, taking advantage of the whole variety of shades and halftones. Gouache, at the same time, is characterized by density, dimness and opacity which are great for bright, vibrant, color-saturated paintings.
Gouache does not flow on paper, thus the lines are clear. Meanwhile, one paints with watercolor on wet paper, which makes the picture blurry.
Watercolor is applied in several layers flowing one into another. When painting with gouache, only the upper layer is visible.
Like all the other types of paints, gouache could be also classified. Therefore, such types of gouache paint exist:
The concentration of harmful substances is reduced. It is permissible to use gouache from 3 years. It is used in preschool and school educational institutions, art classes.
Such paint is convenient for working with large surfaces. It is more liquid and its density is much lower.
This gouache paint is distinguished by easy application on the surface, matte, velvety. Therefore, the pigment is ground more finely. Soaking into a canvas, the first layer of artistic.
Such a gouache has an effect that allows creating an interesting decor for theater scenes or interior decoration. The colors are fluorescence, metallic, and mother of pearl.