Why will FRAMCOLOR PURE PIGMENT PLUS last longer when used to refresh faded, damaged and porous ends?

This color is formulated to restructure and color damaged hair.

The acidic pH will seal the outer cuticle of the hair, leading to better color adherence, shine, and conditioning longevity. The more the ends are damaged and porous, the more FRAMCOLOR PURE PIGMENT PLUS will adhere to the hair for longer lasting results.