Rotating comb design: The rotating comb provides instant coverage with fast and even attachment of color. It follows the direction of your hair for effortless application and a natural finish. Consistent color brilliance: The design clings tightly to hair fibers to deliver lasting pigmentation. Bright shades stay wellmaintained and nonyellowing through extended use. Easy dyeing solution: The comb teeth are integrated with the dye components, enabling convenient application while allowing precise control of the amount to prevent clumping. Stylish touchup solution: The slim pen format offers portability and convenience for quick color adjustments in multiple scenarios, adapting easily to spontaneous styling needs. Use scenario: Quick root touchups between color appointments or after washing to maintain a natural look. Use scenario: Travelfriendly onthego styling, ideal for keeping color fresh while away from home or in transit. Use scenario: Lastminute color refinements before meetings, interviews, or social events to ensure a polished appearance.