The Christophe Robin Shade Variation Mask in Ash Brown is a nourishing hair treatment designed to enhance and refresh the color of brown hair. It subtly tones the strands, reducing warm or red undertones and imparting a cool, sophisticated ash brown hue. Enriched with natural ingredients, this mask also conditions the hair, leaving it soft, shiny, and revitalized. Ideal for maintaining or deepening your ash brown shade between salon visits.