Winter brings all kinds of delights, and hat head is just one of them. When the mercury plunges below 45 degrees, you'd be mad to not wear a hat. But when I visited Chicago during the holidays, I soon experienced the joy of flat, static-addled hat head. Leave it to a Chicagoan to have a few tips for beating it. Michael Jacobson of Michael & Michael salon [1] has a few ways to banish hat head:

• Roll with it. For a big event, a little preparation can help. "For longer hair, put two or three large rollers in your hair and cover with your hat," Jacobson says. "When you reach your destination, make your way to the ladies room and remove and fluff. This will keep the hair from getting matted down under the hat."
• Modify your ponytail. Pebbles Flintstone might have had the right idea all along. "Put your hair into a loose ponytail at the crown of the head and tuck it under the hat," Jacobson suggests. "When the hat comes off, undo the ponytail and shake it out with your fingers."
• Be prepared. Women with short hair can refresh their hair easily with a bit of pomade. "Pomades are also great for eliminating static once the hat comes off," Jacobson says. Just remember to use only a small amount to keep hair from looking overly slick.

Source [2]