ketchito
Forum Replies Created
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If the pH is around 9, then the Sulfonic acid is mostly neutralized, and you have a sulfonate instead, which is the actual detergent. Sulfonic acid has less surface activity hence is a poorer detergent.
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Then it doesn’t matter. The problem might be to have a cationic elulsifier.
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Which emulsifier is in your microemulsion?
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Even though it might help in processability (although the very use of excessive glycols softens the product forcing them to add glyceryl stearate), PPG and Glycerin will impair the product’s perormance, especially foam (flash foam is fundamental, especially if it’s a SH bar).
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I’d check some patents on how to do the process to form crystals. One way is to use a premix of some of your anionic surfactants, the pearlizer and water. You heat, mix and slowly cool down. You should get a viscous white fluid. You should add this at room temperature to your batch, once you added all the surfactants.
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Could you be a bit more specific about the solubility test? Keep in mind that ZnO, TiO2 and silica are not water soluble.
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To my understanding, the more soluble fragrances (I wouldn’t call them water-soluble since they don’t readily mix with only water to form a clear solution) usually use more solubilizer than the heavier fragrances, and also have smaller and more polar molecules than the other type. They are mostly useful for surfactant-based cleansing products and clear products in general where the main solvent is water.
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The key there for the not completely solid white color is propylene glycol.
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Yes. Cationic polymers are commonly incorporated in shampoos with anionic surfactants without issue.
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Thank you for the advice Perry, I appreciate it ????
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Keep in mind that they’re are using way more cetyl than stearyl alcohol. That can influence final viscosity.
Also, this might be a bit counterintuitive, but try with a bit less of SLS.
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First, what are you using to neutralize your sulfonic acid, and what’s your final pH. For these products, the higher the better.
To improve performance, increase your non ionic surfactant (although, i wouldn’t use nonylphenol, and would replace it with something like laureth-9 or laureth-7).
The optical brightener is ubiquitous. Tinopal CBS-X is a good reference, and there are many cheap versions, mainly from China.
A good chelant would also improve your performance.
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Thanks for your comments.
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The two silicones in your benchmark are for clear systems, perhaps that’s the reason.
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Cut both the Guar HPTC and the silicone in half. Then, if you require extra slip, increase the silicone little by little.
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Could you make a test removing ethoxydiglycol?
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Waxes are hard to emulsify, that’s whay they might be getting out of your emulsion and give that waxy feeling. I recommend you to check commercial products so you understand better their fórmulas. For a hair pomade (I think that’s what you’re trying to do), a high amount of a waxy emulsifier like ceteareth-20 can work. Also, styling polymers work well for hold.
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If it were me, i’d choose BTMS since it gives a stiffer alpha gel and a bit more slip thanks to the counterion. Although the difference is not radical, a lower price and decently better performance would make me choose BTMS.
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Then there’s something wrong with your pearlizer or the process. Your pearlizer shouldn’t interfere with the viscosity, since what should happen is that it crystalizes out of the solution, hence, no interacion should happen. Another chance is that you make a pear premix with water and surfactant, let it cool, and then add it to the rest of the bulk. You could also use a ready-made cold processable pearlizer.
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Ok. Can you try with only 1%, instead of 2%?
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Usually, you need to cool down slowly for crystals to properly form. How are you doing your cooling down process?
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What’s your manufacturing method (order of addition, mixing speed, heating, time, etc.), and which equipment are you using to make the product?
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Coacervates are neutral in nature, so I wouldn’t expect hairs to stick together because of the film. What you could experience is overdeposition, but that depends on your coacervate design and the performance of the shampoo to remove most of the coacervate deposited. You might benefit from this reading: https://www.amazon.com/Conditioning-Agents-Cosmetic-Science-Technology/dp/0824719212
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What it means is that under certain conditions, SCI could suffer hydrolysis since it has an ester functional group. You can check supplier’s website to check what’s the safe pH range of use, but I believe it’s close to 6. Now, that doesn’t mean that at a pH of 5.8 it won’t work since hydrolysis takes time depending on different factors like pH (it will be for sure faster if your pH is at 2).
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Hi. Can you be a bit more specific?