This has been bugging me each day for months – I dry my hair with the hair dryer pictured below. I realize that’s a silly thing to do, like hot wind blowing across a desert. But here’s a picture of the Vidal Sassoon blower:
On the top is a thing called the “ion switch.” When I turn it on, nothing changes, and when I turn it off, nothing changes. Does anyone know what the ion switch does?
Piece of Mindful 
The ionization switch supposedly adds electrons to or takes electrons away from (ionizes) the atoms and molecules in the air. The ionized particles then theoretically have dipoles (positive and negative ends) with the positive ends attracted to your hairs. Once the hairs are covered in ions, they have a negative charge oriented on the outside and repel each other like two negative poles of magnets your hairs won’t want to touch, thus giving you volume,. Don’t ask me if it works, this is simply the science that may or may not actually be in play. (also, positive and negative dipoles may be reversed in my explanation, I forget which keratin like)
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