This product is now obsolete, since I have made a new version that responds to some of the feedback I have received, like the ability to apply a skin, undo functionality, move the neck vertices etc. The new version, Version 2, is available for both male and female.
The revisions (in particular the neck) required that I create a new product. However, I have no plans to withdraw this version of the tool, so you can continue to edit heads made with it. You can find it online here.
Many thanks for your kind support!!
