A powerful yet gentle cleansing shampoo that prepares the hair cuticle for optimal uptake of proprietary Signature Keratin. KC PRIMER was designed to work synergistically with Keratin Complex NKST, NKSTB, EBO, KCTEXTURE, and PBO and is the necessary first step in the treatment protocol. Gently yet thoroughly removes buildup from hair. Eliminates hair product buildup. Ensures optimal results when performing Keratin Complex NKST, NKSTB, EBO, KCTEXTURE, and PBO keratin smoothing treatments. Formulated without sodium chloride to protect the longevity of Keratin Complex hair smoothing treatments.