Discover our cutting-edge Anti-Breakage Technology. Schwarzkopf Keratin Color with Pre-Color Serum leaves your hair looking healthy and strong for up to 80% less hair breakage* and extra long-lasting color intensity! K·Bond-Plex™ repairs inner hair structure and coats the hair surface after the coloration process for strong and healthy looking hair. The shades provide intense and long-lasting color with even results from root to tip and 100% gray coverage. (*vs untreated hair)