Colour Protect Radiance Protection Shampoo is a creamy, citrus-scented shampoo that cares for color-treated hair. Whenever hair is dyed, it is also lightly damaged, as the hair dye must be able to lift and break through the hair cuticle in order to deposit new pigments. This process leaves the hair more prone to dryness, split ends, and dullness, as open cuticles become permeable to water and compromise the structure of the hair fiber. In order to counteract this, it is important to keep the hair fiber nourished and the cuticles sealed, so that the hair doesn't lose any extra moisture.