Seeing red? Enrich dark bases with Dark Envy - Matrix\'s first range that neutralises red undertones in virgin and all-over black to dark brown hair colour. Dark Envy Red Neutralisation Hair Mask has a complex concentration of dyes to neutralise red undertones on dark brunette bases while deeply nourishing the hair fibre and leaving a radiant sheen. Key Benefits: - For virgin and all-over black to dark brown hair colour - Combination of blue-green direct dyes - End result leaves dark bases with depth & cool, glossy finish - Signature fragrance of citrus, jasmine and cedarwood