This is Jonathan Davis, singer of KoЯn.
The finished file is 199 Mb, A3 (297 mm x 420 mm or 3508 x 4961 pixels), resolution 300 pixels/inch. The hair alone is 10 layers in photoshop. The tattoo´s are by no means an exact copy of the real thing and it is placed in 3 layers in the file. It took me 3 days to finish, or around 15 hours.
Tools: Wacom Intuos 4, Corel painter 12 and Photoshop CS5.