Abdullah
Forum Replies Created
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I am not using NACL to increase viscosity In these samples to see separation faster. With higher viscosity precipitation takes afew days.
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I did use the search bar and did everything advised there. Didn’t solve the problem.
Actually the precipitation was in shampoo with SLES: CAPB 14:2 active surfactant pH 5.
I did try different methods. Non of them worked.
1. Adding cationic guar to 25% water, add citric acid, viscosity and clarity increased, mixed for 20 minutes, added CAPB, EDTA, SLES.
2. Added SLES CAPB EDTA citric acid to water, pH 5, mixed cationic guar with 1% fragrance or 1% glycerin, then added it at the end and high shear mixing. Next day it has precipitated.
It doesn’t have fish eye or anything
????
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Could it that 20 minutes mixing is not enough for gum hydration and need more time?
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My 10% SLS power needs 16% of a 50% citric acid solution to reduce the pH to 5.5. how much citric acid did you use?
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Is it water thin?
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Add some EDTA
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0.05% EDTA would increase the viscosity a bit.
Use this preservative at 1% of total formula. Not 1% of water phase.
I would also recommend CMI or dmdm hydantoin
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pH 7 is good too.
It is active surfactant.
You will use it once a month, not everyday and it is clarifying shampoo, it has to be a bit Strong.
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I would increase total anionic surfactants
Like
5% AOS
3% sci
6% glutamate
2% amphoteric
pH ~6
pH 8 is not good
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Just use some SLS, SLES or AOS because you are using it less often or increase sci and glutamate and decrease amphoterics in your current formula
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@Perry44 hi
I receive this message to slow down???? when i comment in a discussion i have created recently. What can be the cause?
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All soaps are drying. It means no company has been able to make a soap that is less drying. So don’t waste your time on solving that problem.
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@ketchito i found the problem.
I made two batches. One without NACL and one with 1.5% NACL but without amodimethicone micro emulsion.
The one with 1.5% NACL but without amodimethicone micro emulsion was stable. But the one without NACL that had amodimethicone micro emulsion precipitated again in one day.
Now that we know the problem is amodimethicone micro emulsion, what should I do about it to prevent it’s precipitation?
Emulsion is: Amodimethicone (and) Trideceth-12, 3000 cps amodimethicone viscosity, <0.1um particle size, 25% silicone.
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@DavidW where can i find this information?
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By all the water you mean at least how much water?
My SLES is 23.3% active so i use 60% of it, 6.6% CAPB, 7% NACL 20% and only ~24% water is free at first for cationic guar
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I will try adding EDTA first and see.
I have made different batches with different pH and all precipitated.
1. Reduce the pH to with 0.05% lactic acid 85 solution, that was final pH too
2. Reduces pH to 3.8 with 0.6% citric acid 50%, and at the end adjusted to pH 5 with 0.4% caustic soda 20%.
3. Reduces pH to 3.8 with 0.6% citric acid 50%, and at the end adjusted to pH 5 with 0.3% SLS power dissolved in 3% water.
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You forgot to mention @Pharma
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Surprisingly ???? i use jojoba oil to reduce my skin oiliness. Specially on nose and it reduces oil production very well.
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Your surfactants also have water
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Same thing has happened with dimethiconol TEA DDBSA emulsion instead of amodimethicone emulsion.
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Same formula without amodimethicone and EGDS is stable with this amount of NACL.
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Of course you can add it. Your formula problem might be something else.
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Hi mike
I just shared my experience because i haven’t seen or used any soap in our market that is not drying. Maybe we don’t have good soaps here ☺️
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No it doesn’t have Cetrimonium chloride. It is clear as it is micro emulsion. The one with Cetrimonium chloride is opaque and it was creaming to the top. This one is going to the bottom.
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Hi @ketchito
Thanks for the comments.
Yes it precipitated again.
I will make another batch without NACL and see what happens.