Schwarzkopf Bonacure Colour Freeze Silver Shampoo is a pigmented shampoo specially formulated for use on grey and lightened hair types, protecting it from unwanted yellowing. This shampoo lightly distributes blue-violet dye through the hair, neutralising unwanted warm undertones by preserving and reviving natural cool tones. Its unique pH-balanced formula returns the hair and scalp to its optimum pH value of 4.5, improving the structure of hair both inside and out whilst retaining 90% of the colour pigments inside the hair’s matrix, preventing premature fading for long-lasting, vibrant colour for up to 30 washes. In white hair, the shampoo adds an ashy shimmer and lightly brasses for definition. Free from SLS/SLES, Silicones and artificial colours. Vegan-friendly.