I am very interested in using non-toxic haircolor. I have not had any problems with the regular chemical products but I much rather use something natural. I used henna before but the colors are too orangey-red for my taste. Your web page doesn't have much information. Are these haircolors henna-based and/or vegetable-based? How does it work? What is the range of colors? Are they available to the public or are they only used in salons? Sorry for all the questions but I am very curious about this.