Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Did not work for me at all

Well I do not understand why it worked for the reviewer that gave it five stars. I did exactly the same thing and it did not work for me at all. I mixed it in boiling water and then put it on my hair while it was still hot and left it in for over one hour but closer to two hours. Then I rinsed my hair but did not shampoo it. My hair color ended up exactly the same with no changes. The white is still white and my brown hair is exactly the same shade. It did not work for me at all. I did waste several hours of my day on nothing. Very disappointed.Update: I found something that worked for me. I bought pure henna and pure indigo and mixed them to dye my hair. That worked perfect and my hair is a rich, shiny shade of dark brown (just a couple shades under black.) I recommend that anyone trying to get a shade of dark brown do that instead of buying this product.