Henna, PPD "black henna" and indigo "black henna"

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Posted by Catherine Cartwright Jones on August 25, 2002 at 15:39:16:

Here's what they look like next to each other.

I added water to these samples and left them for 20 minutes. The
Henna began to express reddish orange Lawsone dye. The Indigo began
to express blue dye. The PPD-laced henna separated out the
characteristic brown-purple-black PPD dye. It's more obvious in
person han in this photo ....

Now you know what you're looking for.


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