ketchito
Forum Replies Created
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Hi! It might me the case that your system is sensitive to high amounts of electrolytes. Try making your product without Sodium chloride to see if you still have the issue (if you need more viscosity, you can use Cocamide DEA, PEG-4 Rapeseedamide, Crothix Liquid, or a similar ingredient to build viscosity).
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If mildness is your only requirement, then ethoxylated are always better. Now, formulas are not solutions of a sole ingredient, and you can make a surfactant like SLS milder by mixing it with an ethoxylated anionic (like P&G have done for years), with an amphoteric (like CAPB), or with polymers (like PQ-10).
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Sorry, I didn’t fully get your question. Since you’re making a lotion, I’d use a non neutralized carbomer instead, since usually the emulsion process takes time and high shear. If you have no other choice, then reduce your emulsion time, but check through stabilityvtesting if it was enough to give you good stability.
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You can and should incorporarte carbomers in your water with high mixing. At these stage, there’ll be no significant impact on their structure. Once neutralized, you can only mix with high mixing, very shortly.
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There are ways to calculate these parameters as part of the design. If you’re not familiar with this, you could make small samples at different speeds and mixing times, measure their viscosity, and put them in the oven to see how stable they are.
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What are you using instead of Mineral oil, hydrogenated polydecene, etc? Maybe you can tell us what your ingredientes are (without percentages), so we can check what can be causing the olor.
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Polysorbate-20 is not a lipophilic emulsifier. I advise you to check on some similar products on the market, patents and some books to understand how to make that type of emulsions. To me, multiple emulsions don’t have a very different feeling than conventional emulsions, but they would help you for instance, protect sensitive ingredientes from oxidation.
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If you want to create a W/O/W by shaking, you need to apply same principles as for a bi-phasic product. Which solubilizer are you using in the water phase of your second emulsión? Also, you need some salt also in the water phase.
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Just out of curiosity, are you first marina a W/O (with the corresponding type pf emulsifiers), and then adding this to an O/W emulsion?
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No worries. For a face wash, I’d only add a low % of either polymer. Try how it feels at 0.1% (active matter).
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I think you should have a different approach. If you want your product to perform, you need to start with the basic principles of detergency, type of substrates, detergent-substrate interaction, etc. You could then check what big guys in the marketing are domingo in terms of formulation (they for sure follow those principles I mentioned). Then, understanding all that, you could think about replacing some materiales for more natural ones and compare if they still perform or not. Doing it the other way will only result in an underperforming product with a good marketing story.
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Yes, that ratio is based on active matter. And even though each system is different, you could use that ratio as a reference. Good luck with your tests!
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Another option is that the Kraft point of your solution is too high. Solutions of non ethoxylated anionics (like sodium coco sulfate) have a higher Kraft point than ethoxylated ones. You could reduce your Kraft point by either increasing your Cocamide DEA, your Hydroxysultaine, adding CAPB or switching to an ethoxylated anionic surfactant (like Sodium laureth sulfate).
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No worries. Since you’re using the liquid versions, it doesn’t matter if you add thicnener before or after dimethicone. Good luck!
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Sodium Cocoyl Glutamate is the worst when it comes to viscosity, I actually use it when some product got too thick, to reduce viscosity. Aculyn 88 is fine. Also, if Crothix Liquid is Hard to get, there’s also Genapol LT from Clariant.
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Also, if you don’t have anything to suspend (like silicones, oils or beads), then you could replace your acrylates by Crothix Liquid, which works well on sulfate free formulas, and at low levels.
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No worries. Now, Sarcosinates are hard to thicken surfactants. Can you replace it with Sodium C14-16 olefin sulfonate? The latter has a better viscosity response when mixed with CAPB (not as high as SLES, but decent), and will help you save some money. Also, you cal try /removingreducing Polysorbate 20 (which can also reduce viscosity). Most surfactant-based formulas don’t require a solubilizer for the fragrance.
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What’s the pH of your product? Sodium cocoyl glycinate gives a pH-dependent viscosity. I believe around a pH of 6 you can get the highest viscosity, but I’d advise you to try different viscosities, from 5.5 to 7.0.
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Try adding some chelants, like MGDA or GLDA. You shouldn’t have any issue with glucoside-based surfactants at low level.
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This type of serums doesn’t have an emulsifier. Instead, it uses its thickeness to suspend oils. The White cast could be do to the hyaluronic acid or the gums.
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Glyceryl stearate and Cetyl alcohol are not emulsifiers, but structuring agents. Same for Stearic acid (unless you neutralize it? This, and the fact that we don’t know the polarity of your oils, might be leading to an instability of your emulsión. One of the samples was more stable perhaps due to higher mixing time/speed or different cooling rate. I’d put both samples in the oven to see if they are stable, and run my calculations again to see if I have enough emulsifiers (and the right one) for the oils you have.
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Got it @PhilGeis . Supplier will have to deal with his mess. I wouldn’t compomise product’s or consumer’s safety ????????
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Thank you @MarkBroussard and @PhilGeis . I was thinking to lower the pH of the botanical extract, but I understand thtat even at very low pH, that would only inhibit growth, but not reduce the population.
The extract is a liquid extract (solvents are water/propylene glycol). It doesn’t show anywhere which preservative system it’s being used). The manufacturer is called Nanofitotec (Brasil). I’m attaching some screenshots from the technical docs they gave my client. Weird thing is that their count for mold in the CoA is 10 cfu/mL, but in the technical sheet, it says 100 cfu/mL ????.
The products where the ingredients will be used (at a dose of 0.01%) are a conventional shampoo (pH 5.0-5.3), rinse-off conditioner (pH 4.0-4.5), leave-on spray (pH 4.0-4.5)…and that’s it.
Would it be possible then to use part of the preservative system (EDTA/Phenoxy/Sodium benzoate) in the botanical extract, prior to its final use?
Thanks a lot, I really appreciate this.
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Try doing a knock-out test. Your refined Pracaxi Oil might not be too compatible with your silicones. Also, why are you using an emulsion? Keep in mind that your Amodimethicone, C11-15 Alketh-7, Laureth-9, Glycerin, Trideceth-12 is an emulsion and has water, which can be also affecting your clarity.
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6% of paraffin oíl might be a little too much. Start with 1-2%. I don’t think you’d need more…although, I’d personally prefer silicones.