Schwarzkopf BC Bonacure Color Freeze Silver Shampoo is a shampoo ideal for blonde hair. It neutralises unwanted warm undertones and revives cool tones. Thanks to its formula, the shampoo prevents colour fading. The shampoo gently cleanses and restores coloured hair back to its optimal pH value of 4.5. Yellow undertones are removed. The hair is gently cleaned. The shampoo can be used on both lightened and coloured hair. It does not contain SLS/SLES sulphates, silicones or artificial colours. The shampoo is vegan.How to use: 1. Apply shampoo to wet hair. 2. Massage in and leave on for 2 to 5 minutes. 3. Rinse thoroughly.