Individual results may vary. For some, it may take weeks before you see results. For some type of hair, the coloring effect may be more subtle. The color shampoo is the most effective when used in combination with Rishiri Hair Color Treatment and followed by the color shampoo to maintain the hair color. Using this shampoo alone may not achieve the coloring results for some individuals. *Deformation such as dent may be seen in the container, but there is no problem in the quality of the contents.