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Preservative for hairgel
Most secure preservative system for Carbopol/PVP gels? No isothiazolinones. Can’t afford too many challenge tests..
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20 Replies
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Possibly DMDM Hydantoin…
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https://chemistscorner.com/cosmetic-formulation-basics-styling-gel/
I guess @Perry recommended the same too. -
Thanks, will DMDM Hydantoin work alone?
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Yes, it would work alone.
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Yep. That’s all we had in our Tresemme and VO5 styling gels.
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There must/should be an alternative to DMDM Hydantoin. See:
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The EWG is not a reliable source for information and their ratings are not science based. There is not a single toxicologist who works with/for the EWG.
A better source is work done by actual scientists evaluating the safety of ingredients. See this complete report on the safety assessment of DMDM Hydantoin.Of special note…”Based on the available data included in this report, it is concluded that DMDM Hydantoin is safe as a cosmetic ingredient in the present practices of use.” -
I just spent over an hour on the EWG site looking up “rated” ingredients to satisfy a client’s requirements. Now I want to puke. I mean it, I really want to hurl chunks after reading all the crap that organization is serving up.
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Absolutely. It is just a tank of bilge. Perhaps we (here) should get together and start a new site to compete with it, one that gives proper information.
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Great idea, Belassi!
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if you want thorough, scientific and commercially/politically impartial reviews of contentious ingredients free of charge, the European SCCS (Scientific Committee for Consumer Safety) is a good source:
http://ec.europa.eu/health/scientific_committees/consumer_safety/opinions/index_en.htm
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@braveheart yes, no reason to use anything else if it is safe and works.
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“There is not a single toxicologist who works with/for the EWG.”Says it all.I used to spend my time at EWG as the chemical bible reference to check list of ingredients before I try them when I was looking for solution to my eczema/dry skin challenges. Now, I know better. But that is still what the vast majority of the public still have.@Belassi, that will be truly a great idea!!
Now, that I am working to take my ideas into the market place, there should be a better place of reference for the average public to check what is safe and what is not based on genuine information. It’s unfortunate that most of the information are incorrect.
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I keep on hearing that DMDM alone is not so effective for yeasts and molds and that there are better alternatives. Usually I get something like Euxyl PE9010 recommended. But is this really as effective as a formaldehyde releaser? Of course I know micro-organisms are unpredictable sometimes but..
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Euxyl PE9010 is an exceptionally reliable preservative, but it’s better suited to emulsions and you’ll have a lot of trouble dissolving it in a gel
when DMDMH has failed on its own, we’ve used Glydant Plus from Lonza, which is a blend of DMDMH and iodopropynyl butylcarbamate; it’s never failed us yet -
@Bill_Toge thanks, this is the kind of information suppliers seems to avoid. I think the Glydant plus will be a better choice for a hair gel product project with a short dead line.
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I have also used Euxyl PE 9010 and it is an excellent preservative. I haven’t done it in a few years but Sculke & Mayr the makers of Euxyl used toallow you to send them formulations to get their recommendation on the best preservative. I’m not sure if they still do this but you could look for the sales rep for your area and they would tell you if they still provide this service.
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Germaben 2 will not fail at 1 percent.
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Here is a formula for a liquid preservative system I developed and used in a wide variety of personal care items, including gels, creams and shampoo/Bath formulas for years. It never failed.
Propylene Glycol 66%
Methyl Paraben 11%
Propyl Paraben 3%
Phenoxyethanol 20%Procedure:
Phase A
Heat Propylene Glycol and add with mixing Methyl Paraben and Propy Paraben until Parabens are completely dissolved and mixture is clear.
Phase B
Cool to below 40C and add Phenoxyethanol with mixing.Finished product will be crystal clear, and extremely effective.
Use percentage, depending on certain types of actives, between 0.5% - 1.5%.
I hope this helps.
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