That said, paint tends to dry faster on hot press paper, which means an overall shorter period in which the paint is workable. [3] X Research source
Cold press paper is sometimes referred to simply as “Not,” which means “Not pressed” or “Not hot pressed. ”[7] X Research source “Rough” watercolor paper is another form of cold press paper, but is pressed at a lower pressure between sheets of felt to create an even bumpier surface. [8] X Research source
In addition, the bumpy surface of cold press paper allows the brush to graze across the paper, creating an uneven, textured appearance, which are great when painting watercolor landscapes. Cold press paper is also great for wet-on-wet techniques, which provide softer edges.
Though hot press paper is similar to other papers, it can still absorb and hold plenty of water, unlike regular printer paper, which buckles when wet.