The coloured hair must be washed and looked after carefully for better preserving their glare and their strength. Daily aggressions (too aggressive pollution, sun, shampoos,…) cause a degradation of the pigments: the dark hair gradually loses the force of their colour. A bases vegetable extracts, the Special Care Washing Coloured Hair of the range Colour and Soin of the 3 Oaks protects the capillary pigments. The naturalness and the intensity of your dark colour are preserved as at the first day of your colouring.