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gas generation in Hair Straightener with glyoxilic acid
Hi
i’m faced problem in hair straightener formula , where after 1 weak the bottle swelled because the formula generate gas . i’m use below ingredient :
Glyoxilic Acid 50% =25%
Lanett O 5%PEG-40 hydrogenated castor oil =2%sorbitan mon stearate =2%jojoba oil 2%hydrolyzed keratin 0.5%Alantoin 0.5%behentrimonium chloride 2%PEG-90M 0.05%Lactic Acid 0.2
Glycolic Acid 0.2
Glycerin 0.5
Mono 0.5
Myritol 318 2%Cetiol HE7. 2%please advice if any thing wrong in above ingredients or must be add ingredient inhibit the gas generation -
5 Replies
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What’s the pH? If it’s below ~3, I’d say it’s allantoin which degrades. -
pH = 0.9
but i tried to eliminate allantoin but the problem still
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You might try a full knockout test. See which ingredient is responsible. https://chemistscorner.com/do-you-know-the-fastest-way-to-become-an-expert-cosmetic-formulator/
Knockout Experiments for Cosmetics - The Fastest Way to Become an Expert Formulator
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thank you Perry
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Smell the headspace of the swelled bottle. I suspect you are getting acetic acid there from decomp of all that glyoxylic acid. You really need a buffer there too. BTW, what the heck is “mono”?
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