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Do glycols ruin emulsion stability?
Several tech papers suggest so
Like this one where there’s a clear separation with increasing glycol concentration
https://www.sciencedirect.com/science/article/abs/pii/S0927775711005590My experiments also seem to show propylene glycol ruining emulsion stability.
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3 Replies
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I’ve never had a problem and I use it as reinforcement for the preservative system. I suppose it depends on your emulsification system.
Quite frankly this article (link) was useless to me. The minimal information given says nothing about the emulsifer except that it was a ‘non ionic surfactant’. Hell, that could be glyceryl stearate or it could be CAPB for all we know. And, emulsifying paraffin?? That is not representative of anything I am interested in. -
I can’t see how much they used. My anecdotal evidence suggests it’s the other way around. Glycols are much less problematic than some other humectants.
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Post ingredients and percentages, without a good emulsifier that would happen
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