Keratin Complex Keratin Care Shampoo 13.5 Oz is a shampoo designed to complement hair-care routines for keratin-treated or smoothing-treated hair. Its formula cleanses the hair while helping maintain a smooth, manageable, and well-conditioned appearance. It can be incorporated into a maintenance routine, particularly following keratin treatments, according to the manufacturer's recommendations. The 13.5 oz size provides a practical amount for regular home use or professional salon routines.