So, if you ever find that you have to heat treat one (or more) of your doll wigs because you have an insect invasion (like bed bugs for example), get one of those mesh bags they make to wash/dry delicates in and put them in there before you throw the wigs in the dryer. They are more likely to come out just a nicely as they went in and less likely to come out looking like the doll stuck it's finger in a light socket.
yes, this is bitter experience speaking