Hahahahahaha holy s**t I'm so happy. Rather than bring in a fan or wind machine, some studios hire people to dress up like a green Putty and flip some model's hair all day long. And then they spend the whole drive home trying to figure out what to say when people ask them what they do for a living.
It's not just shampoo commercials that utilize this completely ridiculous technique. It's also how they make Superman's cape flap.
Oh, and while those two guys are working the marionette strings? This is also going on:
Those guys were hired to shoot air directly up at Superman and also stare at his junk (it's a confidence thing, all actors use it).