Protect your color from its worst enemy: H2O.  "I tell my clients that rather than douse their whole head, they should just spritz a brush with water, then run it through," says Nunzio Saviano, a stylist at the Oscar Blandi Salon in New York City.  "Your hair still gets damp, enabling you to reshape it, but it's exposed to less water."  Alternatively, you could try a tap-water-free restyling product, such as oscar Blandi Protein Mist ($18; oscarblandi.com).