The blend file contains 3 separate models:
A model divided into separate parts: head, eyes, hair (particles), and headgear. It features simple geometry with a multires modifier, and wrinkles and details painted on top.
A unified, closed model (printable) – without headgear, with sculpted hair. It has simple geometry with a multires modifier, and wrinkles and details painted on top.
A unified model with headgear prepared for printing. The polygon count has been reduced to keep the file size manageable while maintaining good quality.
An exported STL file (from point 3) is also included, ready for printing.