I have given a lot of thought about posting color without PPD. The problem with this, is there are so many levels of severity, that what one person can use, another can't. Even with 100% organic henna, if you add indigo alone to make black, you sometimes need to keep it away from the scalp. So, should I list all color without PPD, even if it has TDS? Knowing about the cross reactions? -or should I be listing ethels, knowing someone could be harmed by them? It is very difficult for me, personally, because I know of people who have been harmed by EVERYTHING. I am going to compile an ingredient list, and begin to hilight the diamines. I think that might be a better way to handle it