These photos will give you an idea of what the process is to make a doll head. Dolls are sculpted, then silicone molds are made, then resin is poured, then the resin is cured in pressure pots, then the resin parts are cleaned up. The dolls are then strung.
https://www.flickr.com/photos/30966630@N04/albums/72157607837715795/with/2921271029
