i find this a real quandry. I come from a country where there are electrical outlets in bathrooms and hence one can use a blowdryer/irons/whatever in front of the mirror and conveniently stash them away.
Over the years I've stood outside the bathroom with hairdryer on a power strip, trying to see into the mirror, used the reception mirror and kept my blowdryer next to the telly, used the guest room, apart from when there's a guest, etc.
It's always inconvenient and uncomfortable. I leave for work before DH so I can't do it in our bedroom. I don't have room to set up a dressing table anywhere anyway.
I'm curious what others do?