me again...Posted by Holly on December 5, 2004 at 22:51:17: In reply to: Re: Fumaric acid? posted by Holly on December 5, 2004 at 22:46:44: I did more dictionary searches:'a crystalline acid C4H4O4 found in various plants or made synthetically and used especially in making resins' 'An organic acid, C4H4O4, found in various plants and produced synthetically and used mainly in resins, paints, varnishes, and inks.' 'organic compound related to maleic acid' as for maleic acid: 'a colorless crystalline compound found in unripe fruit (such as apples or tomatoes or cherries) and used mainly to make polyester resins' 'A colorless crystalline acid, HO2CCH:CHCO2H, used in textile processing and as an oil and fat preservative.' It's possible it has two uses: aesthetics (tinting/colouring the henna powder) and preservation. Can't find anything on how safe it is tho'!
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