Schwarzkopf Professional Chroma ID Bonding Colour Mask 9-12 Light Grey (500ml) is Schwarzkopf Professionals first 100% customisable, semi-permanent mix and tone colour system with integrated Bonding Technology, lasting up to 15 washes. Chroma ID offers low commitment colour toning, enhancing, and refreshing virgin, coloured or pre-lightened hair. With integrated Bonding and Low Salt Technology, combined with deeply caring formulas, Chroma ID adds colour whilst maintaining, and even improving overall hair quality. Bonding Technology reinforces the structural bonds within the hair shaft for stronger hair with less breakage. Low Salt Technology reduces the pigment penetration barrier, allowing more colour pigments to enter the hair. Keratin and Panthenol provide extra condition and seal the outer cuticle, improving hair quality. Key Benefits: Neutralises brassy tones. Refreshes or enhances coloured or virgin hair. Creates pastel to bold expressive colour statements. Pre-pigmented hair. Corrects colour results. Directions of use: Mix the shades of your choice if desired (or use the Clear for a more pastel shade). Always apply the colour evenly to pre-washed and towel-dried hair. Leave for up to 20 minutes for more intensive colour results, or less if desired (check visually). The colour will last for up to 15 washes but may vary due to the chosen shade, application time and condition of the hair.