Winter weather is one of the most common causes of static hair. When the temperature drops and the air loses its moisture, electrons bounce off the hair, resulting in positively charged strands that oppose each other. Shampooing the hair too often also contributes to excess static.
Products that help prevent or control static strands include dryer sheets, hair serum and hairspray. However, people should use hairspray sparingly, since its alcohol content can actually make the hair drier and lead to more static. Ionic blow dryers are effective in reducing the occurrence of static, since they release negatively charged ions that attach themselves to the hair, rather than bounce off each hair strand. When negatively charged ions cling to positively charged ions, it creates a neutralizing effect.