Brush i made to paint rapunzels hair here:
youll need a bit of photoshop knowledge.
i do not know how to save a brush with the settings so when you open it itll look as dots, the setting you must give are:
0% size variation and make it pen presure sensitive (in control)
0% angle variation and also make it pen presure senitive (this is optional, ill make hair look a bit mesier, depends on what you want, you can play with other angle control settings to achieve different effects, rotacion control is pretty cool too)
opacity variation 0% but then again with pressure sensitivity
flow variation 0% and the same, pen presure.
another thing: if you use the smudge tool with this brush it might also create a hair effect.
thats it! merry hair making!