DCM Perfect No Yellow contains purple pigments, so that the yellow tint disappears from the hair. For various reasons, a yellow glow can sometimes appear in your colored hair. Discoloration can be caused by the environment or because you have bleached it. If your hair contains red pigment (either by dyeing or by yourself) and you want to dye your hair blond, you may get orange, yellow or blond hair with a too warm yellow glow. It is a very common problem. DCM Perfect No Yellow contains purple pigments that suppress yellow pigments, give your hair a cool, silvery blonde shade and the yellow disappears. DCM Perfect No Yellow provides a natural lightening of color nuances. This keeps your desired color tone and accents such as highlights get a natural look. The special formula of DCM Perfect No Yellow Shampoo reduces unwanted yellow reflections on grey, bleached and highlighted hair. The purple pigments in the shampoo ensure that no unwanted yellow tones remain in the hair. The yellow shades can arise when coloring the hair. DCM Perfect No Yellow shampoo ensures that beautiful colors such as ice, ash, gray and blonde tones are retained for longer.