Understanding sculpting fine surface details like fur.

Hi there, I've been sculpting in blender for some time now, but i can never manage fine surface details like shown in this render I stumbled across.

Im posting here to ask if anyone would have any insight on how this sort of detail is achieved, would the artist have to use special custom brushes ? or is it more likely the just zoom in and use a very high res sculpting mesh and very slowly work their way over the entire surface with meticulous attention to detail.

Source : http://wattchewant.tumblr.com/post/180575164551/braixen-bust-i-also-post-stuff-here
E: There are more angles at the source.