Garnier fructis color last with reinforced active fruit complex has been specially developed to care for coloured hair because it can be hard work keeping your colour looking fresh why because as hair is washed water enters the hair fibres through the cuticles causing the hair to swell colour molecules which are held within the hair fibre are able to escape through gaps in the hair cuticle as the hair is rinsed this is especially true if the hair has been damaged by for example