gray hair can get yellow or brassy tones that make the color appear dull. “[Purple shampoo] can help neutralize yellow tones that often appear in gray or white hair, keeping it looking bright ...
It deposits the perfect amount of purple dye to counteract brassiness while gently cleansing. A purple shampoo made just for gray and white hair ... beauty resource for women at every age.
and she was initially surprised that people from various ethnic groups with different hair textures have bought one - from white women with thicker hair and people who had traction alopecia ...