Usually, most digital styles tend to focus on simple brushes, like the round brushes, and their usage in hair is no different. So, the typical example would be the one on the left, where we use fill_round to draw a silhouette and build up to lighter values.
The reason I use fill_round here is because the pressure curve on the size is s-shaped. My tablet has a spring-loaded nib which also causes and s-shaped curve hard-ware wise. This means that it becomes really easy to draw thin lines and big lines. Having a trained inking hand helps a lot with this as well, and it’s something you build up over time.
We then gloss the shadow parties with the basic_tip_default. So you can get really far with basic brushes and basic painting skills and indeed I am almost convinced tysontan, who draws our mascot, doesn’t use anything but the basic_tip_default sometimes.
However, if you want an easy hair brush, just take the fill_round, go to the brush-tip pick predefined and select A2-sparkle-1 as the brush tip. You can fiddle with the spacing below the selection of predefined brushtip to space the brush, but I believe the default should be fine enough to get result 2.