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Acid Dyes
How can I incorporate Acid Dyes on a Emulsion?
I have cetrimonium chloride and cetearyl alcohol, 75ºC, and when I add the Acid Dye with propilene glycol as solvent, it doesn’t mix well with the emulsion, I can see little grains of dye, besides the emulsion get the color of the dye.
When I add the acid dye when the emulsion is cold, it dissolves really well, but changes the organoleptic aspect of my emulsion, like it’s more “creamier”, and I don’t like.
There’s a right temperature for it? What can I do to correctly dissolve the acid dye on my emulsion?
With Basic Dyes and HC dyes is so easy to solubilize on 75ºC, I don’t understand why Acid Dyes are so complicated. -
3 Replies
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Pre-dissolve the dye in an aliquot of water and heat to 70 to 75C … then add the pre-dissolved dye solution to the emulsion and homogenize in. These dyes are quite pH dependent, so be mindful of that.
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acid dyes are anionic, and your formula contains a cationic, so they’re not mutually compatible
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MarkBroussard, I’ve tried it, but didn’t work. Same problem.
Bill_Toge, I thought about that, but there’s a lot of cationic formulas on the market, with acid and basic dyes together in it, so I think it has to be possible!
The formula loses viscosity when I add the dyes too, there’s another problem.
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