Have adult helpers! Use great caution with their hairline. When little
wisps of hair get caught and dry in the plaster, it really hurts to remove
the mask. You do not have to wait that long for the plaster to set up...they
can be removed carefully after about 4-5 minutes, and held until hardened
more. Also, mix as little water as possible to decrease setting and drying
time! Good luck, and have fun!
MP in NY