Instantly neutralizes unwanted brassy/orange tones in lightened naturally dark brunette hair Tone-correcting pigments attach to the hair fibers and stay attached through multiple shampoos Preserves 89% of hair color for up to 18 washes for 6 to 8 weeks* Multi-Spectrum Defense Complex helps protect color against fading Bio-Advanced Peptide Complex delivers root-to-tip repair and protection for healthier hair with every use Boosts shine and reduces frizz * When both Color Balance Blue Shampoo and Conditioner are used.