What you should know about Guesso
If you are new to acrylics, you may be wondering - what is gesso and why do I need to know about it? Step right up - this page will tell you all about the glories of gesso and how to use it.
Gesso is an important art supply to get your canvas ready for painting which you can apply it to any surface and then you can paint on that surface with acrylic paint. Gesso is made for acrylic paint to bind to it in a way that looks non-plasticky and gives the application dimensionality. If you applied paint directly on the canvas, the finished product has a plasticky look
Gesso is not only a better surface than white paint but also gives some texture to the surface. But what's more important, if you don't use gesso, the canvas will soak the painting and you will spend more paint. Almost all canvas you buy has been primed with gesso but I advice you to put another coat of gesso over it, or two.
Using gesso you can ultimately paint on anything, from canvas to cotton to vinyl, to wood, plastic, rubber - it creates a painting surface for paint to adhere to.
It provides an excellent surface to paint on. It adheres well to most surfaces, and provides a great surface itself, without over-absorbing your medium
Applying gesso will establish a better "working surface", as it forms tiny rough edges for paint to cling to. Also, it's gonna dry a lot faster than oil paint.