Knowledge: L'Oreal's manufacturing plants in China do not use natural ingredients in the dyes they produce even when the largest number of Matricaria Chamomilla plant is found in China from which you can extract organic dye.

Conversation:
I love to color my hair. I recently colored it purple.
How interesting! Did you do it yourself or did you go to a professional?
I did it myself at home. Do you have any advice on how to maintain it?
I don't have any advice. What I can tell you is that in 2011 alone, at-home coloring in the US reached 1.9 billion dollars.
Wow, that's a lot of money. It can be stressful dying your hair by yourself. I wonder how they dyed it in ancient times.
That is something I also can't answer. If it helps, I know that there are natural dyes from plant sources
Which type of plants produce natural dye?

Response: The Matricaria Chamomilla plant, which is found in China from which one can extract organic dye.