Cosmetic Raw Materials 
Lily7
Forum Replies Created
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i’m having the same problem, the acid dye fixes on hair but last only like 2 washes, more or less! but I see in the market products using the same acid dyes, without any basic or HC dye, and it lasts a lot of washes, at least 1 month of washing! I just can’t understand how they’re doing it, and just can’t believe no one in this forum know how to fix it, how does it really work…
…I think they’re really keeping it secret, you know? lol
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Bill_toge, I’ve already tried it, didn’t work. Like I said, only worked when I use a higher temperature. On 20ºC, didn’t dye.
Belassi, there’s months I’m reading a lot of patents, including this one, but any of them really makes sense to me, cause I know a lot of hair dyes that doesn’t include de ingredients the patents mention, and they work! Usually this patents are made for coloring shampoos, where acid dyes are incorporated on anionic environments. But acid dyes on cationic hair dyes, no information!
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Bill_Toge, I just found the textile process of acid dyeing, which includes high temperature and acid environment. Nothing about any special ingredient, besides citric acid or acetic acid, or any information about dying it on ambient temperatures.
Johnb, I never found a special method for non-oxidative dyes. Non-oxidative dyes are basically emulsions with direct dyes, so I’m doing the traditional emulsion method. I’ve already study the ingredient list of a lot of hairdyes and didn’t find which ingredient would work specially with the acid dye.
Man, how difficult to find this information if you have just internet to study!
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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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thank you for the suggestion, bill! I’ll try!
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Cetearyl Alcohol, Ceteareth-20, Cetrimonium Chloride, Propylene Glycol, Citric Acid, Preservative.
