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Unpredicted behaviour of guar gum
Hi everyone!
I am formulating shower gel with a thickening agent guar gum. One time the gel shows up relatively
transparent, smooth, and clear, and stays like this over time. Then I
am happy with it. Some other time, and here comes the problem, the
gel appears cloudy, yellowish, and very soon phases appear.
What confuses me mostly is that both results I can get with the same ingredients used. The difference may just lay in %.
First I thought the problem may be in a change of supplier but it was not.Here are some results for comparison. The formulations with 400 g and 100 g were successful. Both 500 g formulations were cloudy.
400 g 500 g
Water 86% 81%
Mipa-Laureth Sulfate and Cocoamidoprophyl Betaine 4% 7,5%
Lactic acid 0,1% 0,1%
Coco-Glucoside and Glyceryl Oleate 2% 3%
Glycerine 6% 6%
Guar gum 1% 1,8%
Preservative 1% 0,5%100 g 500 g
Water 84% 84%
Mipa-Laureth Sulfate and Cocoamidoprophyl Betaine 4% 4%
Lactic acid 0,1% 0,1%
Coco-Glucoside and Glyceryl Oleate 3% 3%
Glycerine 6% 6%
Guar gum 2% 2%
Preservative 0,5% 0,5%The successful variant 400 g I still want to improve with more guar gum (thicker) and more Mipa-Laureth Sulfate (more foam). But as soon as I change % then the show gel appears cloudy and separates in phases. I always add ingredients in the same order glycerine, guar gum, detergents, water, acid, preservative. What can course such a problem (cloudy, yellowish, phases)?
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