The New Year is the ideal time to reenergize and reengineer a fitness routine, but what about all your busy work and family obligations that can't be done with limp locks? Greasy hair is about as appealing as a day spent clipping your grandmother's toenails. Fear not, the solution is to simply spritz that oily tress tragedy into shape with a dry shampoo. In various formulations, from powder to aerosol, these potent water-less shampoos are the perfect pick-me-up post gym or outdoor workout sesh. So, lace up your sneakers and get back on the fitness wagon and leave the bad hair day excuse behind.