Colour Mask has a unique and luxurious hair mask texture that comes in a jar. Once applied, it leaves hair with long-lasting colour and perfect grey coverage as well as a healthy, glossy shine. The rich, creamy, non-drip formula is easy and quick to apply - even on hard to reach areas of the hair. Colour Mask contains three steps to indulging care for your hair: Firstly, the Colour Cream with strengthening Amino-Active-Protein fortifies the hair fibre. Secondly, the Developer Cream with smoothing Combability-Booster significantly improves combability vs. standard colourations. Thirdly, the Hair Mask with caring Vitamin-Oil-Complex leaves hair feeling incredibly soft, deeply cared for with a healthy, glossy shine and a pleasant fragrance. The 657 Light Copper Brown is recommended on dark blonde to medium brown hair. It is suitable for light to medium grey hair. The result of the colouration depends on your natural hair colour. If you're unsure between two shades, always choose the lighter shade. On long or thick hair and first use we recommend using two packs of Colour Mask. A skin sensitivity test and a strand test should be undertaken before each application. The skin sensitivity test should be carried out 48 hours prior to the use of this product, even if you have used hair colour before.