PhilGeis
Forum Replies Created
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the largest companies are not “adapting to the new standards”. To the extent they’re using other preservatives - they are still using the standard of consumer use and not USP 51. I’m familiar with some of the seemingly “lesser” systems and those are the product of a lot of effort and carefully controlled to meet the corp standards. That doesn’t mean some corp (advertsing or marketing) VP didn’t decide to take a risk for specific sku’s.
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Every formula in FDA enforcement reports passed PET - USP 51. Passing the test means little and garbage systems - esp. “natural” and the contrivance of “hurdle” - readily pass.
As ketchito said, those working to the purpose of preservation - protecting the consumer in use, - maintain the traditional systems despite the market pressures driven by EWG BS, “clean beauty”, priority lists, Ecocert head fakes, etc.
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@Pharma
I’ve had some luck with phytate.
Hydroxamates are good for fungi - not for pseudomonads. The best known are pyrithiones - Zn (ZPT) and Na. -
Phytic acid
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@ketchito
I too have the greatest respect for pole dancers as well as all similarly situated artists. -
antimicrobial toilet paper
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This is a paddle culture?
Tho’ one usually sees bacteria (esp. pseudomonads), distilled water does grow bugs. I’d complain to the supplier. -
@Formi
Yes -
@ketchito
Right. There are a few article on this and I certainly saw efficacy of the concept in challenge.
https://www.sciencedirect.com/science/article/abs/pii/0003267080870474 -
I did not see mention micro test on an expanded product.
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Clostridium botulinum is not a cosmetic problem - pseudomonads are the primary risk contaminate well below 4.7.
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@Pharma
I’d not buy any of it. -
Phenylethyl is not the equal of Phenoxyethyl.
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Curious - why is this called an “oil”?
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Yes - pentylene glycol is prob not necessary but do add EDTA. 1% 9010 is a bit high. 5000 ppm phenoxy is a good target.
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EDTA is useless with that much Mg salt. You’re ;prob ok as described.
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Bunch of secondary preservatives. Suggest you go for efficacy and consumer protection rather than politically correct standards.
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@Perry
Bet we can find some org. to call anything natural - the license to deceive is cheaply bought. -
If in aqueous solution - you’ll need microbiological preservatives. I’m not aware preservatives are added to powder colorants - assume they’d be identified in relevant CFR section.
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@Dazed
Think both are prob ok - with Sodium benzoate rather than Benzoic acid. I prefer the 1st as I’ve seen more stability issues with sorbate.No sure what natural leaning means - what would be the claim?
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Pump is good. Prob need something for Gram + bacteria and fungi.
What is your target pH? -
I understand and filling maty be a challenge. Tube, tottle, flexible capped package - ?
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Powders often require preservatives. Consider please that they take up moisture under humid conditions such as a humid bathroom. In this, the greatest risk is fungal growth. Micro quality of your materials is also important - esp. the clay.
Dynamics of pH will affect Nabenzoate efficacy and those are hard to anticipate. Propyl parabens, chlorphenesin might be some options, if needed. Look at labels of similar products. -
@Perry
Boy Perry - think this guy makes some odd statements..
Benzyl alcohol - 2% is well beyond typical use levels and Eu limit is 1%. It’s pretty weak vs Gram + bacteria and oxidizes primarily to benzaldehyde and an almond odor. It could further oxidize to benzoic acid but no way enough to preserve.
Cap glycol would be weakest vs fungi and should be a booster, not a stand alone or a central element. -
Jar for a hair product.
Used too near the shower and sink - will very likely collect a (tap) water layer that no amount of preservative in product will preserve.