It is a shear pain to get off of mics, only use it if you feel like you need to buy new mics every show... which is some cases happens anyway. I still have nightmares about having that crap in my eyelashes from when I had to take makeup class. Don't use it unless all other options are gone.
Odds are they are hairsprayed on... but then again... spending a few hundred every few nights for a new mic if it gets destroyed is not a huge deal their... once again... if you want to use spirit gum... go for it... just don't expect your mics to come back clean and in good condition. You get a bit of that crap close the element and your mic is done for, no questions asked.
a small copper section of pipe with a very small rubber band wrapped the pipe about 2 or 3 times then you put that over the head of the mic and grab some of their (actors) small hairs close to the skin and slide the rubber band off so it affixes the mic and the hair together