Review (2/5): Wouldn't recommend
Edit: the lightness somehow faded after a few washes!! Thought this product was great, but it isn't in my opinion.
As mentioned from other reviews it smells bad. But I used it once and took my hair from black to dark brown, then used it again the next day and it went from dark brown to light honey brown. The smell stayed in my hair and was prominent when it was wet for several washes.