While I would absolutely suggest that heads be modeled before using sculpting to create the detail Im actually pleased with this result. I can see the potential for retopping this model. I only went 3 subdivisions in, therefore it is not very high poly in comparison, but it does have a measure of realism.
This sculpt can be used as a low poly or high poly bust since the multires is still applied.
*Disclaimer*
-This model was made in Blender and is only meant to work in Blender. As such some features may not be included in 3ds Max, Maya, or any other 3D Software. In other software.

Specifics
Polygons: 1,742
Verts: 1,792
Samples: 128
Software: Blender 2.79


Resources and References used
Head reference images