Schwarzkopf Bonacure Hairtherapy Color Freeze Silver Shampoo actively supports and enriches the shimmer of cool colour directions. Enhanced with essential violet colour pigment that can even reduce warm colour undertones within the hair. Unwanted golden or yellow tinges are minimised by using Schwarzkopf Professional BC Bonacure Color Freeze Silver Shampoo. The hair is cleansed, while violet direct pigments fight the un-aesthetic warm undertones. Ideal for use on pre-lightened and cool colour treated hair. Applied onto white/grey hair, it gives healthy metallic touch and enviable shine.