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Help with hair conditioner/leave in formula viscosity
Hello, new here!
I am developing a 2 in 1 conditioner and styling cream formula, which I need to be moisturizing but light because it is rinseable and leave in at the same time. I have a problem with my formula: The emulsion forms well, and has a good consistency, until at the end I add my preservative Euxyl k712 (NCI Name: Sodium Benzoate (and) Potassium Sorbate) and the viscosity drops completely.
Please does anyone know why this happens and what I can do to stop it from happening?
PS: The reason I add the Euxyl k712 at the end is to add it at less than 40 ºC and with a pH less than 5.
Thank you!!
Formula:
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3 Replies
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Try adding the Euxyl K712 between 55 and 50°C (not lower that that), and add it with veeeery slow mixing, like a kid that doesn’t want to it his/her soup. Viscosity will drop, but it’ll also recover during cooling. The drop in viscosity just means your system is impacted by electrolytes.
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Can i ask why that temperature and not cooler?
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Since the formula is sensitive to electrolytes, adding it at higher between 55-50°C would give some room for recovery, keeping in mind that the high temperature would allow structures to rearrange better than when it’s cooler and stiffer.
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