Why do I need to use a gesso primer for Acrylic painting? Technically you don't. But in practice painting directly onto a raw canvas is not an enjoyable .
Canvas painting for beginners Johannes Vloothuis, ArtistsNetwork.com. Close up. Both cotton and linen canvases are either primed with acrylics or oil. Acrylic
If you're using acrylic then you don't really need to prime the canvas, with oil paint the most important function of primer is to stop the oil rotting .
Priming a canvas is also recommended when using acrylic colour as it will give. Oil painting primer (or solvent-based primer) is the more traditional option and .