I use a dryer with two motors, you can turn them both on to blow hair and turn one off for the face. I have Double K dryers, love them. PVC body so they are fairly lightweight, long hoses, two motors and easy to use. I show dogs plus groom, so use them daily
Make sure you get a dryer that uses forced air drying, they don't heat up and don't burn the skin, but force air through the fans and blow warm air with alot of force.