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Preservative for bug food ‘Colloidal Oatmeal’…
I try and stay away from ‘bug food’ in my products, but recently tried colloidal oatmeal, and for a guy whom is rarely impressed with hyped ingredients, this one caught my eye, and tantalized my fingertips.
It really left my skin silky, even 8 hours after application. Not claiming it did anything, just stating that for me, there was a textural enhancement on my skin.
So here are some of the parameters.
Due to B3 inclusion, I like to keep creams about 6.0 pH, which really throws a wrench into the preservative selection. NOTE: If all the good options require a lower pH, I can (for double the price) switch to a reduced nicotinic acid form of B3. So if the best option requires lower pH, I am open to hearing your recommendations…just state the pH requirement.
The other parameters are: I prefer (for customer perception) to formulate without Parabens and formaldehyde-releasing preservatives.
Currently I use Euxyl® PE 9010 and Phenethyl alcohol, and it would therefore be economical to reuse these products, and possibly add something to them.
SIDEBAR: I found that Colloidal oatmeal also upset the emulsifiers I was using. Can anyone tell me why this would happen? (I will make a more robust emulsifying package in the product that will contain the Colloidal Oatmeal.) That package was Mont 202/GSC/Aristoflex AVC.
Next package will contain some 165
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4 Replies
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Preservation of products with “colloidal oatmeal” is an experiment that requires preservative testing your confident. and prob a round or 2 including aged product before your coonfident. Llook at the similar products on the shelvees now. You’ve phenoxyethyl alcohol - why add less effective phenethyl - unless its for rose odor? Additions should be the more water soluble. Check micro content of you oarmeal.
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PhilGeis said:Preservation of products with “colloidal oatmeal” is an experiment that requires preservative testing your confident. and prob a round or 2 including aged product before your coonfident. Llook at the similar products on the shelvees now. You’ve phenoxyethyl alcohol - why add less effective phenethyl - unless its for rose odor? Additions should be the more water soluble. Check micro content of you oarmeal.Thank you for your response @PhilGeis .
I want to put my best foot forward before I test…so using the flawed logic of, the more components the better… Would you think Jeecide CAP-5, INCI: Phenoxyethanol (and) Caprylyl Glycol (and) Potassium Sorbate (and) Water (and) Hexylene Glycol, would be a good starting point? I even thought about adding back Ethylhexylglycerin, so that I had everything the E 9010 had. Again keeping in mind a pH of right around 6.0.
I looked at one of the leading producers of oat products, and all of their sample formulas were using E 9010. Not that their examples make it right, just my observation.
I use the phenethyl for two reasons….yes I use rose absolute, and I feel this boosts the fragrance, but I was also under the impression that it did a better job on the head space than E 9010? I might be wrong. Since this is a cream, I thought headspace coverage would be important.
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Appreciate you challenge. Assumje you’ve ruled out formaldehyde releasers (?).
pH 6 isn’t great for sorbic acid, and benzoate might be a better choice if you can ,lower the pH. Is 6 cast in stone?
Suggest you start testing and see what breaks through. -
PhilGeis said:Appreciate you challenge. Assumje you’ve ruled out formaldehyde releasers (?).
pH 6 isn’t great for sorbic acid, and benzoate might be a better choice if you can ,lower the pH. Is 6 cast in stone?
Suggest you start testing and see what breaks through.Thank you @P@PhilGeis
I am keeping the pH around 6 due to use of Nicotinamide, USP grade. So I like to be a hair below 6 and above 5.5.
Yes, I was trying to not use the F releasers.
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