GR
GR-7 Professional
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It works.
It works. Most of my grey hair is gone. It took a while though for the hair to revert back to the original colour. It could be becasue I was using too little and it required more liquid. After 10 days, I still had half bottle full. Then I decided to use more liquid and applied it only to the sides of the hair, the area with more grey hair. After 10 days, the hair started to revert colour. Highly recommended