Jennycat
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- Jennycat
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(Quote) Thank you @EVchem! That's a great point. I have the impression that even at neutral pH Sodium Benzoate would provide some anti-fungal and anti-mold effect. I made a batch without Sodium Benzoate and I will see if that would help.
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(Quote) Thank you Matt! We do have some amino acid derivatives for claim purposes. This is very interesting and I'll need to keep that in mind when I formulate.
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Thank you for your response! Yes I did disperse HEC in cold water then activate it with alkali ingredients, and the viscosity was achieved to 4000 cps after batching, which is desirable for our product (the surfactant blend does not thicken much). …
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There are various grade of hydroxyethyl cellulose, so they behave differently. The delayed-hydration version as a coating for easy blending, and you will need to adjust pH to 8-10 to thicken it.
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Only PQ-10 thickens. I think it depends on the concentration of PQ-10. I've used 100% PQ-10, which thickens at 0.3%. There is also diluted version, which is easier to work with, but it is 10% concentration, so 3% of this version is needed to achiev…
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There are liquid carbomers that are easier to work with. Eg. Carbopol AQSF-1
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Hydroxyethylecellulose, and carbopol AQSF-1
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We are paring phenoxyethanol with sodium benzoate, and ehtylhexylglycerin.
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I've used both PQ-7 and PQ-10. PQ-10 also helps to increase viscosity a little.
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AOS and CAPB should work.
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I've used Xanthan Gum to stabilize a emulsion at low percentage. The final emulsion is still spray-able.
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Is the pH the same before and after adding the parabens? Some acrylate thickener might be thickened by increasing pH.
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It depends on what you want, since you are formulating a car shampoo it seems that B is better. In my opinion, "luxury foam" is more like small thick bubbles that last a longer time, not necessarily a higher foam height, and it is usually…
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The judgement of forming performance would depend on your purpose and claim. For example: If you are targeting "easy-rinse", then B is a better option; If you are targeting "luxury foam", then A is a better option.
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For sulfate-free shampoo, AOS+CAPB/Hydroxysultine+Cocamide MIPA can be thickened by salt. I have also had success formulating sulfate-free shampoos thickened by cellulose thickeners and carbomers. One thing to note is cellulose thickeners can be in…
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Hi Curlycorner, I've seen similar things in some of my formulations! How did you add the cellulose thickener? We found that if we add it upfront and have proper mixing until there is no "fish-eye" like chuncks before adding in surfactant…
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This is super helpful information!!! Thank you so much! Did you have to add a thickener in addition to a higher surfactant concentration? (Quote)
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Thank you! The thiazolinons were truly a poor choice, and I'm glad that we are making the change to another preservative system that works better and cause less irritation. However the viscosity drop really bothered me to move forward. Considering …
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Hi asafvarlix, Thank you so much for your reply! I was using 1% of phenoxyethanol, or 1% of benzyl alcohol. I was using up to 20% of a blend that contains 40% of SLES and 15% CAPB. I'll try to boost it up a little more but the budget won't allow m…
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