If judging by the machinations my wife and daughter go through when straightening/curling/colouring their hair, I'd say the process is more labour-intensive now than back then.
Funny how painting my models is not important but I can be ordered to use those skills to paint wife's hair dye at the back when she can't reach...
Also odd that my paints and glues "stink the place out" yet hair dyes don't...
Bless 'em all
Rich.