Re: black dyes
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Posted by Catherine Cartwright Jones on October 17, 2000 at 21:06:59:
In Reply to: Re: black dyes posted by hennascience on October 17, 2000 at 15:02:00:
Pyrogallic acid with titanium dioxide? Gallotannic acid with copper sulphate? There are several tannic variety dyes based on oak gall, accacia and suchlike that will dye skin but irritate it. Black dispersant dye #10 + blue dispersant dye? I have no clue what you have. Is the dye approved for use on skin, or is that a joke?
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