Large sizes of Photoshop brushes for commercial use, Buy now, $9.85 or Add to cart
Best for high resolution work
Check out those free versions of the Photoshop brushes. Read also Help section for more details and compatibility.
Thin Smoke Brushes
With such nice thin and well defined flow it's easy to forget that those shapes are created by smoke.
While some of the brushes have interesting swirls, others flow like finest silk in the wind. You can get great effects with brave use of colors and contrast. Also the transparency is very useful when combining the bursh with the rest of the picture.