Share 'Ladies! How do you avoid helmet hair? I almost have a coworker committed to trying bike commuting!'

I've been given three bike commuting obstacles I must overcome before a female coworker will agree to try bike commuting. I've overcome two of the obstacles for her but I don't know anything about the third. What are your strategies for avoiding or fixing helmet hair? I guess the guys could chime-in here but the more specific the better. Please no "go bald" responses, as I know all about that an…