Home Cosmetic Science Talk Formulating Viscosity Issues

  • Viscosity Issues

    Posted by georgetedder on June 4, 2015 at 2:44 am

    Can anyone confirm or deny polysorbate 80 being linked to a decrease in viscosity?  I am adding 2% alkyl esters to a face wash, with 3% Tween 80 to solubilize, and then I notice a drop in viscosity of the product (after it has cooled) compared to the product without any esters or polysorbate.  My question is, is it the polysorbate? Naturally, I can’t really try my formula with the esters without the polysorbate due to solubility issues.  Does anyone know of particular incompatibilities between polysorbates and specific surfactants, or viscosity reduction at certain percentages? Any help would be appreciated!

    belassi replied 9 years ago 3 Members · 3 Replies
  • 3 Replies
  • Bobzchemist

    Member
    June 4, 2015 at 1:57 pm

    Try using a different solubilizer, like PEG 40 Hydrogenated Castor Oil 

  • Bobzchemist

    Member
    June 4, 2015 at 1:57 pm

    or PEG 50 Hydrogenated Castor Oil (Lipocol® HCO-50)

  • belassi

    Member
    June 4, 2015 at 3:59 pm

    Probably is the polysorbate.

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