As a novelty of Aveda , Full Spectrum Demi+ offers maximum customization of tonality, intensity and coverage, all with a processing time of just five minutes. The 93-percent natural color provides semi-permanent results that last up to eight weeks or 40 washes, and the conditioning blend of certified organic vegetable oils, including kukui, sunflower, castor and jojoba, helps improve the condition of even damaged hair and provides radiant shine. Choose a 5-volume revealer for a pure tonal result or a 10-volume revealer for a more opaque grey combination.