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Hair developer stabilizer
Hi everybody,
Please l nead your urgent help. My company made a hair oxidant cream which is not stable. The bottle bloats when it is put in the oven for stability study (45’C), there are many bubbles in it which tingle skin. I measured the amount of its hydrogen peroxide and the result showed that the texture of the cream is uneven, which means the amount of hydrogen peroxide on the top of the cream is more than on the bottom of the bottle. Is it possible to stabilize the H2O2 in the cream and make a uniform hydrogen peroxide cream? If so, How?
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7 Replies
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This discussion might help https://chemistscorner.com/cosmeticsciencetalk/discussion/stabilizing-h2o2-containing-oxidant/#post-222434
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Thank you @Aniela for the link. However I have read all the topics regaridinf this matter on this forum. Actually I have problem with oxidant cream, which has been made, I do not have difficulty formulating an oxidant. I do not know how stabilize a made ox
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I’ve worked with peroxide-based formulas in the past. To mitigate conditions that can impair their stability, you need to first keep a low pH (a pH below 4 is recommended) and use chelants (diphosphonates -like HEDP- are the best for the job, but not so popular in cosmetics).
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Thanks @Ketchiyo for your reply. The pH is below 4 and in its formula there is HDTP. The problem is that the cream base was made by one-pot process,means the oil phase and the water phase were mixed in cold temp. and then the mixtuer was heated to 80’C. So, the manufacuring process is incorrect, and I do not know how to fix it😔
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Oh, I’ve got it. And why can’t you change the manufacturing process (that’d be the easiest thing to change, unless you require some specific equipment)? If all your materials are liquids (I see no need to heat then), you can add some polymeric emulsifier to make your emulsion more stable (like Sepigel 305).
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Thanks alot. The procedure was changed, after this batch was produced. I will try Sepigel 305, thank you so much for your advice. But you know, the cream is not seperated, I mean, it is apparently stable, however, when I measure h2o2 percentage witout stirring it, the amount rises, but after stirring it, the percentage will be correct!
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That could mean that the H2O2 was not evenly distributed, which is then corrected after mixing.
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