Nucleic-A Proteplex Color Protecting Conditioner infuses color-treated hair with the moisture and proteins it needs to retain its color vibrancy & maintain its overall health. 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.