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Zemea vs glycerin
Has anybody seen independent data (not provided by DuPont Tate & Lyle) on the comparative performance of glycerin vs Zemea?
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9 Replies
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Wouldn’t a comparison of Zemea vs. Propylene Glycol be more valid? I would contact DuPont, Tate, and Lyle (http://duponttateandlyle.com/) for this data. I have not seen any INDEPENDENT data, but in my experience, we have switched it out for PG with no changes in performance.
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PG has a horrible image problem.
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@chemnc - I suppose that depends on your customer.
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AGREE with the foregoing we have switched from pg,1,2 diol to Zemea 13 propanediol.Why do you want to compare to glycerine which is propanetriol?
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In our experience, we have seen zero compromise in humectancy by switching fro PG to Zemea, especially when used in combination with other products such as Glycerin and Methyl Gluceth-10.
PG allegedly has some penetration enhancement and I have yet to see if Zemea also has this property.
“Propylene Glycol; Among the polyvalent alcohols, propylene glycol is the
most frequently used co-solvent in dermatology. The action as a real penetration enhancer is debated controversially in the literature.”http://www.nanobiotec.iqm.unicamp.br/download/Trommer_skin%20penetration-2006rev.pdf
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Why do you also need glycerin?
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In my experience I have found that a combination of glycols will give better effect. Many others can weigh in as well.
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I recently made a lotion in which one had 6% Zemea, the other had 3% glycerin, everything else was exactly the same. I found NO difference between the 2 lotions.
I performed this trial because Zemea is $$$$$ compared to glycerin, AND because in Canada, no one sells it in small quantities, as in 1 liter at a time. -
I use glycerin more than PG. In addition, I mixed some natural base oil.
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