Step 2 in Olapex treatment. Apply after rinsing highlights or colour from hair. The ORIGINAL chemistry that multiplies bonds and cross-links broken bonds. We started by finding two of the world's leading PHD's in Materials and Chemistry that had never worked on hair products before, Dr. Eric Pressly and Dr. Craig Hawker. With this fresh outlook, this dream team invented a single ingredient chemistry, that is free of silicone or oils, that links broken bonds in the hair during and after chemical services making them stronger than they were before. Go Blonder. Push the envelope further without compromising the integrity of hair. From the photo shoot to the salon chair, colorists are set free from the fear of damaged hair.