Delete Hidden Geometry in ZBrush

  • CTRL + SHIFT and drag out a selection to select geometry to hide. The selection area will appear green.
  • Before releasing the left mouse button, or before lifting the stylus pen, press ALT. The selection area will turn red.
  • In Tools > Geometry > Modify Topology, click Del Hidden.
  • Optionally, in the same panel, you may click Close Holes to cap open holes.