SCHWARZKOPF Fiberplex No.4 Bond Serum Treatment 100g Salon-quality results you can feel at home. A home-care treatment equipped with Fiber Bond Technology. This is a special treatment for use after bleaching, coloring, or perming. It leaves your hair smooth to the touch with a healthy shine. Helps maintain the integrity of the hair’s structure with a hair-strengthening system. Provides a stress-free, comfortable experience even for damaged hair. How to Use Apply to towel-dried hair, starting from the ends and working it into the mid-lengths. Comb through with a wide-tooth comb. Blow-dry in the order of roots → mid-lengths → ends. Use an appropriate amount daily on areas of concern.