WHAT IT IS Bonacure Color Freeze Silver Shampoo is a pigmented shampoo for cool color tones. WHAT IT DOES Schwarzkopf Professional BC Bonacure Color Freeze Silver Shampoo cleanses and neutralizes brassy tones on blonde and highlighted hair and enhances silver tones on gray and white hair. Amino Cell Rebuild Technology restores the hair s elasticity and rebuilds the hair structure from within. For hair color that s full of vibrancy and healthy shine.