Schwarzkopf BC Bonacure Hairtherapy Color Save True Silver Shampoo is a temporary hair color that cleanses and neutralizes yellow tones on blonde, pre-lightened hair and enhances silver tones on gray and white hair. Blue, violet pigments enhance silver tones in white hair. Apply to wet hair. Massage and rinse after 1 to 3 minutes depending on color intensity and hair porosity. Rinse thoroughly.