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Hair straightener with Glyoxilic Acid
I’m tried many emulsifiers like cetyl Alcohol, GMS, Lanett O, PEG-40 hydrogenated castor oil . but the main problem the emulsion which contains about 25 % of (Glyoxylic Acid 50 %) separate after about 1 month, another problem the sealed bottles becomes swelled after 2 weeks .
please advise if any one faced like this problem
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2 Replies
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I will advise: I have never faced this problem. Having said that, you state two problems. First is instability, second is gas generation. You likely have more constituents than the ones you mention so this is speculative. For stability, you’ll need to use only alkyl ether ethoxylates to handle that much electrolyte. DEL the PEG ester and GMS please, and use Steareth-20/Steareth-2 or similar. As for the gas, if you have any amino-functional group, or amino acid, even DMDM Hydantoin or urea in that formulation it will react with glyoxylic acid slowly leading to oxidative decarboxylation, the reduction product being carbon dioxide. If there are no amino-functional materials then I don’t know where your gas is coming from unless you chose to put sodium bicarbonate in there. You would have seen that Fizzy Experience right away.
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@chemicalmatt
So if we add amino acids how we can avoid decarboxylation
Thanks
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