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Best online resource describing individual preservatives and efficacy?
I seem to remember stumbling upon a Web site in which several major (natural-ish) preservatives (e.g., phenoxyethanol, potassium sorbate, etc.) were listed, along with an indicator of how effective each was against bacteria (gram +/-), fungus, and yeast. Does anyone know where this might be housed? Thank you.
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23 Replies
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some information chapter 7 - https://www.anme.com.mx/libros/Cosmetic%20Microbiology%20-%20A%20Practical%20Approach.pdf
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I just came across this link today, not sure of the source. Preservatives for Cosmetics: Chemistries & Selection Tips (specialchem.com)
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This is a useful tool. It will of course recommend a Lonza product, but you should be able to find similar products in just about everyone’s preservative lines. https://microbialmanagement.arxada.com/Apps/FormulaProtect
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Was it this website -
@PhilGeis You shared just an invaluable book, I would say literally a text book. I think anyone in the world of cosmetic formulating should read it and learn from cover to cover.
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There is a 3rd ed (2020) that includes more info - natural and multifunctional preservatives/preservation, detailed manufacturing etc. but it’s kinda pricey.
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@PhilGeis Yes, it is but this book can not be inexpensive. I have read 3d edition too
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@vitalys do you have the PDF of 3d edition?
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No, I have got a book
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@vitalys ok
Can you take picture that what that book has said about these preservativesFormalinHydroxyacetophenoneGlyceryl Caprylate -
Right - not legally either.
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vitalys said:@Abdullah Sorry, I don’t think it is ethically correct. You may ask an editor of this book, @PhilGeis about it directly. The book is also available to purchase or order.
WOW
That is very fortunate that the author(Philip A. Geis) is PhilGeis. I would have ask him directly if I knew that.The problem is i am in Afghanistan and can’t purchase online because of recent problems with banks in our country for now.
@PhilGeis any comments on hydroxyacetophenone and glyceryl Caprylate.
I like hydroxyacetophenone for for leave on Products because of the claims it has and glyceryl Caprylate in shampoo because i am using decyl Glucoside, phenoxyethanol and Amodimethicone and without glyceryl Caprylate it is very hard to get enough viscosity. But am not sure how helpful they would be for preservation
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I’ve never used hydroxyacetophenone and not aware of any significant data that supports it as preservative.
Glyceryl caprylate. Too susceptible to microbial esterases - and pseudomonads have plenty.
So don’t think either will help much for preservation.I know you asked about formnaldehyde releasers - can you use those?
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PhilGeis said:I’ve never used hydroxyacetophenone and not aware of any significant data that supports it as preservative.
Glyceryl caprylate. Too susceptible to microbial esterases - and pseudomonads have plenty.
So don’t think either will help much for preservation.I know you asked about formnaldehyde releasers - can you use those?
Yes I can
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I sure would. Add EDTA and maybe benzoic acid. If no stability issues - I think you’d do well.
Are you making it yourself? -
PhilGeis said:some information chapter 7 - https://www.anme.com.mx/libros/Cosmetic%20Microbiology%20-%20A%20Practical%20Approach.pdf
Thank you @PhilGeis for sharing your book. This is incredibly nice of you. The table 7.3 is a treasure!
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PhilGeis said:I sure would. Add EDTA and maybe benzoic acid. If no stability issues - I think you’d do well.
Are you making it yourself?Thanks
Yes i make the products myself.As i am importing almost all the ingredients i use from another countries, i have to purchase in large quantities otherwise the shipping cost would be too much.
Currently i have some preservatives that i have to use, when they are finished i have plan to use DMDM hydantoin both is shampoo and lotions.
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Hi, all.
I think I had actually been thinking of this one:
https://www.olionatura.de/rohstofftabellen/konservierertabelle.phpbut there are a few ones “missing,” such as phenethyl alcohol. Either way, still a great, concise resource for those who are natural-focused.
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suswang8 said:Hi, all.
I think I had actually been thinking of this one:
https://www.olionatura.de/rohstofftabellen/konservierertabelle.phpbut there are a few ones “missing,” such as phenethyl alcohol. Either way, still a great, concise resource for those who are natural-focused.
Most are “natural”: only by the Ecocert/COSMOS “credentialing”. Be cautious of all incl penethyl alcohol. It can partition into packaging material.
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Is the penetration into packaging your main concern, or you have others (including for phenethyl alcohol)?
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Phenethyl (Rose ether) has a rose odor that may clash with perfume. Not on directives and not that effective - certainly < phenoxy.
None are that great - esp. in a shampoo/conditioner context - and very few on directives (odd for a German publication). You’ll find little safety data for many.Ferment Leucidal is vey weak abnd reportedly adulterated ala GSE https://pubs.acs.org/doi/abs/10.1021/jf5063588.
Ethanol demands 20%. Lesser levels are not ‘sehr gut” any more than the rest of those with this silliness.
One combination I know is effective benzyl alcohol/benzoate is labeled limited (small)
Magnolia extract like “Parfum” is another uncharacterized/ uncontrolled magic potion.
Glyeryl caprylate is pseudomonas ester food.
Combined organic acids are just that - organic acids - none is sehr gut.
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Leucidal always cracks me up.
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