1 Apply one or more strokes with a Digital Watercolor variant.
If you would like to restrict the diffusion to a region, make a selection with any selection tool. The diffusion effect will apply only within the selection.
2 On the property bar, adjust the Diffusion pop-up slider.
Drag the slider to the right to increase diffusion, to the left to decrease diffusion.
You can also adjust diffusion before applying brush strokes by adjusting the Diffusion slider.
The Diffusion slider is also accessible on the Brush Controls palette and in the Digital Watercolor area of the Stroke Designer page of the Brush Creator.
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