Would you perm your hair every 4-6 weeks? Did you know that pulling permanent alkaline color through the ends of already-tinted hair, even for only 5 minutes, is swelling the cuticle like a perm would? This is unecessary as Goldwell makes a glaze that will freshen any color without the extra damage of permanent color.
Color Glazing with Goldwell's Colorance will eliminate this excess swelling to your hair. Only using Topchic (Goldwell's permanent alkaline hair color) on the new growth and then applying the matching and conditioning Colorance shade on the mid-shaft to ends will make hair healthier and add more shine.