The KERASILK CONTROL SHAMPOO by Goldwell has a very rich formula to intensively nourish hard-to-control, frizzy hair. It gently cleanses with keratin and silk essence smoothing the rough hair texture. Hair is silky suppleness, stunning shine and a healthy hair feel. The included KeraShape Technology penetrates deep into hair and builds new keratin bridges to let hair silky for a long time.