Rico Buehler has told us about the Old Man Study project made at Vertex School, shared the sculpting workflow in ZBrush, and explained how the character's skin and eyes were set up.
3D Model Old Man Head - TurboSquid 1475109
Augustus Head, Eiad Dahnim Zbrush, Digital sculpture, Character modeling
Making an Old Man's Face Sculpt in ZBrush & Maya
Head Sculpting Process - ZBrush
Sculpt Retro Hitman - ZBrushCentral
Sculpting an old man in ZBrush · 3dtotal · Learn, Create
Sculpting an old man in ZBrush · 3dtotal · Learn, Create
The Most Common Anatomical Mistakes While Sculpting Human Faces!
Making an Old Man Head in Zbrush
Cambodian Old Man Head 3D Model $199 - .ztl .obj - Free3D
Cambodian Monk Head Andor Kollar - Character Artist