Sagot :
It is a method of creative art production. It was developed by Max Ernst.In frottage the artist takes a pastel or pencil or other drawing tool and makes a rubbing over an uneven surface.
Frottage art is an artistic technique in which rubbing is taken of a surface to create a design. It is a technique in the visual arts of obtaining textural effects or images by rubbing lead, chalk, charcoal, crayon, soft pencil, etc ., over paper laid on a granular or relieflike surface.