Teach Soap

is this possible or will it just bleed? i'm asking because i saw some gorgeous blue hair colourant the other day.....

I work for a hair salon - I would advise no.

the process of hair coloring is two step in which the original color is lifted via peroxide (devoloper) and deposited via ammonia (color). Ammonia is contained within the hair colorant itself - therefore you would have soap with ammonia combines with NaOH = ammonium hydroxide, the cleaning agent found in common oven cleansers. Even though you may only use a few drops of the colorant who knows what kind of chemical volcano could arise.

Yes there are non- ammonia colorants and perhaps you are talking about one, in this case the alkalyser is MEA instead of ammonia. Not a great choice either to combine with NaOH.

I would stick with colorants approved for soap and body products.

thanks for that soap1967 - that's exactly the kind of advice i was hoping for!! knew that lovely electric blue was too good to be true.....

If you want bright blue, go with soap safe colorants. Hair colorants have other chemiocals that would not play well with lye. Hair colorants are NOT made for soap.

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Irena
Closed minds are like faulty parachutes; they refuse to open.