Schwarzkopf Chroma ID Bonding Color Mask - bonding semi-permanent color mask.Benefits:- Semi-permanent formula for an infinite array of colour options, without damage- Unique technology provides intense care and hydration- Improves overall hair quality- Enhances and refreshes virgin, coloured or pre-lightened hair- Proviedes refresh for dull mid-lengths and ends- Ideal to correct colour results or neutralise brassy tones- Allows creative toning- Increase longevity of colours, to recover vibrancy and to keep optimal hair condition- Lasts up to 12 washes (depending on shade selection, development time and hair structure)- The shade numbers correspond to the numbering shades of IGORATechnology:- Bonding Technology - enforces the structural bonds within the hair shaft for stronger hair with less breakage- Low Salt Technology - reduces the pigment penetration barrier, maximising the availability of colour pigments entering the hair- Keratín a pantenol - provides extra care and outer cuticle sealing for improved hair quality