Achieve flawless hair color results with Paul Mitchell HT Processing Cream Developer 6.0% 20 Vol 90ml. This professional-grade developer is formulated to work seamlessly with Paul Mitchell’s hair color lines, ensuring optimal color lift and deposit. With a 6.0% (20 volume) strength, it’s perfect for achieving natural-looking color changes, covering gray hair, and enhancing your hair's overall color vibrancy without causing damage. Experience natural-looking color changes and vibrant, lasting color that keeps your hair looking fabulous.