I have download the leaflet in French and followed the instructions to the letter: black color before: after ORANGE product !!! on naturally brown hair before the black (Bob) proceeds much damaged my hair .I definitely not recommend this product ... thank you capillary disaster !!! suddenly: a color oblige to remake it (knowing that the product has more remove the color at the base of Hair as lengths, even with a rescue color, the color is not uniform at all .... I would definitely not recommend this product