I guess I am going to get Legionnaires' Disease, MRSA and ebola cause I use regular old cotton balls for my wicks when I am not using rayon, (organic cotton balls wick so poorly! See Phil B.'s video comparison.), tap water, vinegar and even isopropyl alcohol to clean my heads. I have also used coffee pot cleaner but that is too labor intensive to get the heads clean from the cleaner!
I don't think I would use the hand dryer though. I have never really worried about getting them dry. Just put it back in the tank, add some juice, wait for it to wick a bit and go. The water isn't going to hurt the juice one bit since water is used in many VG mixes. The vinegar rinses very clean and leaves no odor or flavor. And vinegar is used in some juice recipes. The first few hits are meh, then the juice takes over and all is good.
I would suggest anyone using isopropyl alcohol be very careful to get it rinsed out thoroughly. I don't think this is healthy at all to vape!