Gouache painting is a technique in which opaque watercolor paints are used to create images on surfaces like paper or canvas. Gouache paint contains pigment, a binding agent, and white pigment for opacity. This medium offers vibrant colors and a matte finish. Artists can layer gouache for intense colors or dilute it for translucent effects. Gouache is versatile and often used for illustrations, design, and fine art. The resulting artworks often have a flat appearance with rich color.