Keratin Complex KC PRIMER Pre-Treatment Shampoo is a powerful yet gentle cleansing shampoo that prepares the cuticle for optimal uptake of proprietary Signature Keratin. KC PRIMER was designed to work synergistically with NKST, NKSTB, EBO and PBO and is the necessary first step in the treatment protocol.Features & Benefits:Gently yet thoroughly removes build up from the hairEliminates hair styling residueEnsures optimal results when performing NKST, NKSTB, EBO and PBO Advanced timed pH-elevating technology opens the cuticle for optimum resultsFormulated without sodium chloride to protect the longevity of Keratin Complex smoothing treatments