Nucleic-A Proteplex Color Protecting Shampoo replenishes moisture and maintains color vibrancy lost during chemical services by restoring the natural balance of amino and nucleic acids. Nucleic-A products are uniquely blended with the strength of amino acids, the building blocks of keratin protein, and nucleic acids, the major components of DNA and RNA chains. This combination of amino & nucleic acids penetrates deep into the hair to repair and replenish even the smallest damaged sites, leaving hair soft, smooth and shiny with every use.