If you're concerned about EMF, better to address the source of the lectrical currenct where it comes in the house. Individual application such as the hairdryer are important too, but one should also consider that the house is a grid of EMF. Here's a little gizmo that I found through an professional aquaintence. It not only reduces the EMF in the house, but it does so by optimizing current flow by regulating the household surges, so it actually cuts your electrical consumption through conservation and thus, it reduces your cost too. The losses that the unit eliminates represent the ELF radiation that is actually waste ...... waste that we all pay for with our health and our money.