The core of this innovative technology is a molecule characterized by Amino groups placed at the edges of the Polymer chain. This peculiarity allows the Polymer chain to assume a "horseshoe" shape and this allows it to bind tightly to the hair. Moreover, the chemical/physical characteristics of the active ingredients selected (no water solubility, high molecular weight, high affinity to hair), allow the complex to settle on the hair and not be eliminated with the first shampoo. This is why JKS All hd Plex is so effective. It is also Ammonia & PPD Free.