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Facial Cleansing product
Hello, I am working on the development of Facial Cleansing product. I am using 2 anionic amino acid based surfactants and one non-ionic surfactant, as my surfactant system. I would like to incorporate Magnesium Chloride hexahydrate divalent salt as a thickening agent for viscosity building to create a worm-like micelles. I am not sure at what step of the procedure I need to add Magnesium Chloride to the formula. Any advise is highly appreciated. Thank you, Eira
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6 Replies
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From my perspective, this is a very complex formulation based on synthetic ingredients.
My approach was a lot simpler and straightforward. I saponified extra virgin olive oil. This produced a very mild face wash base to which we added appropriate EOs.
Globally, this product was enormously popular, both under our own brand name, and Private Label.
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Generally adding salt at the end of the process is best, that way in scale up you can work at lower viscosity as long as possible (less energy to mix, less risk of air entrapment), and all your other ingredients will already be present and accounted for. And it’s always good practice to create a salt curve for your specific formula.
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Thank you for your input and thank you @evchem2 for answering my questions. ????
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Younhave two amioacid-based surfactants and one non ionic. Adding salt might not produce a viscosity increase, unless at your working pH, one behaves as an anionic and the other as a zwitterionic, since the addition of salt works to reduce repulsion between head groups of surfactants, so micelles keep on growing or changing conformation. You could also perform a pH screening to see where you have a peak in viscosity (if you want to keep both aminoacid-based surfactants).
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thank you for your recommendation!
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Also, be careful when working with magnesium chloride since it’s hygroscopic and you might have issues in plant. You could use KCl instead.
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