Hmmm, I am still not sure I know what you mean? Do you mean painting medium (acrylic, watercolor, oil, digital)? or which brushes I use in photoshop? I do work in watercolor occasionally but most of my work is all digital.
Mostly default brushes in Photoshop. I use spatter to block in, watercolor type brush for rendering and a airbrush for light effects (generally). For this design (Sorcerer) I used the spatter brush for 95% of it with a little bit of airbrush for the smoke edges. It varies though depending on the subject matter.