A: You're not just talking about your hair sticking up when you whip off your hat, right? Because if that's the only time you have flyaways, there's probably no problem with your hair's health—you're just triggering a plethora of positive electrical charges. But if it's sticking up most of the time, you've got cuticle damage, which means that the strands' outer layers are peeling up, exposing the inside fiber. An intact cuticle protects the fiber; when it's interrupted, the fiber is more susceptible to static, says Paradi Mirmirani, MD, assistant professor of dermatology at Case Western Reserve University. The best method to tame flyaways is to use a silicone-based or leave-in conditioner after you shampoo. The conditioner coats the fiber, making it less prone to static, says Mirmirani. A natural-bristle brush (not synthetic) will also help keep things under control.
Bottom line: Condition your hair to make it behave.