I just got the black kit, and I have to apply the henna first, wash it out, then apply the black. If I want to do it as a single treatment, do I mix the henna, the black, and water into one paste? Or do I just do the black all by itself?
Does your product undergo third party testing for heavy metals, pesticides, etc? If so, could we see results if we wish to purchase? Also, where are the ingredients sourced from? Thanks!