Summertime, and the living is usually easy.......but NOT for your head!! Heat from the sun degrades the protective protein in your hair--which oxidizes the color to a brassy hue, wipes out shine, and leaves those locks very brittle. On top of that, UV rays, follicle-frizzling humidity, and moisture-zapping chlorine and saltwater can parch your 'do. Here are a few summer hair care tips to keep your locks in top shape: Create a "sunblock" for hair. Because there's no effectiv