The gently yet effectively cleansing shampoo Schwarzkopf Professional BC Bonacure Color Freeze helps you maintain long-lasting, beautifully radiant color in your hair. The vegan formula with plant keratin and pH 4.5 Balancer technology perfectly locks in the color pigments inside the hair fiber. As a result, color loss is prevented; instead, you get up to 90% color retention and the maximum possible intensity for up to 30 washes. At the same time, it very gently, yet thoroughly, cleanses the hair and helps protect the hair structure from the inside and outside.