Enhance your colour with the Christophe Robin New Shade Variation Care in Warm Chestnut, a nourishing hair mask designed to enrich natural and colour-treated hair with rich caramel tones. The rich hair mask seeks to refresh your hair colour by enveloping the hair with a highly-pigmented formula. Hair appears more vibrant, bolder and silky-smooth as the colour-protecting hair mask delivers a vibrancy-boosting effect.