To the veteran formulators out there, and you know who you are, here's a query. Given the vogue of using alkyl substituted polygyceryl esters as primary o/w emulsifiers - instead of the cheaper, better, but "scarier" ethoxylated ones - which have you had the most success with in emulsifying polar oils, such as veg/botanical triglycerides? There are varying degrees of alkyl substitution creating varying, and in my opinion nebulous, HLB values stated by suppliers. Most veg oils are in the HLB range of 7. What poly-gly emulsifier have you used, and what oil load was emulsified successfully? DO NOT tell me to try using the glucoside esters loved by the Skin Deep and Lotioncrafters crowd; frankly, they suck without using co-emulsifiers or stabilizing resins, and are over-priced, which even their manufacturers admit to. I purchase chemicals on the industrial scale, so feel free to cite manufacturers/distributors (NA).
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www.makingskincare.com
www.learncosmeticformulation.com (free online course)
Formulation discussion forum (18,000 members): www.facebook.com/groups/makingskincare/