henna is red/brown but can be oxidized or percipitated to black
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Posted by Catherine Cartwright Jones on March 24, 2000 at 08:46:58:
In Reply to: black henna die posted by atul mulay on March 24, 2000 at 02:05:07:
People here who have tried the Kali product report that they got absolutely pathetic results. It might work on hair, but as far as anyone's tried here, it sure doesn't work worth a damn on skin. I've personally tried adding black iron oxide to henna paste. The henna stain appears to be darker when you first take off the paste, but that darkness very quickly vanishes .... theiron oxide absolutely does not breach the skin cells, and therefore has virtually no effect on the henna stain color past the first day. It might work on hair which is more porous..... it's just not happening on skin. I've tried indigo mixes on skin .... again..... works ok in hair, but is pretty useless on skin. The black henna indigo hair products I've tried (and tried, and tried, and tried) just didn't work on skin. A sad grey smudge was the best I ever got. The only people I ever heard from who got indigo to work were in extremely hot humid climates, and that makes the staining behave differently. I have a complete chemistry rant on henna, how it penetrates skin and binds, including traditional techniques to get henna black ..... but you'll need to email me and ask for it, and be cool about copyright.
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