Henna fine, applied well. I mixed with the coffee, held for three hours. Immediately after rinsing had the impression that there is no effect at all, the next day it became obvious, the hair of reddish-brown (dyed red with henna ordinary) became dark brown. Maybe after the next darker painting even more. Outcome 4 stars, because well, still not turned black. ps is very easy to wash the henna out of the hair when applied to the hair with henna balm (any), to hold a couple of minutes, and the shower.