Home Cosmetic Science Talk Formulating Higher viscosity? What substances to increase micelles?

  • Higher viscosity? What substances to increase micelles?

    Posted by Levita on February 22, 2024 at 6:16 am

    Hey there,

    I am trying to achieve shampoo-like viscosity but with possibly low input of Sodium Coco Sulfate and Cocamidopropyl Betaine. Ration 3:1 or 4:1

    Of course, I can add salt (sodium chloride) to increase viscosity but are there other substances that would increase viscosity/micelles? Maybe a mixture of salt with something else?

    Unfortunately, gums like guar gum and xanthan gum glue down the whole formulation and kill the foam. The formulation then needs much water to dissolve and start to foam properly.

    Thank you!!

    oldman20 replied 1 month, 4 weeks ago 4 Members · 3 Replies
  • 3 Replies
  • BetaOneChem

    Member
    February 22, 2024 at 6:51 pm

    You can try adding PEG-150 DISTEARATE at 1.5%.although many chemists say it’s hard to formulate with, but it’s rather easy, adding it to a heat soluble surfactant like CAPB at 60°C would help dissolve it, mix other ingredients and stir slowly. It gives the kind of viscosity i like for shampoos.

  • ketchito

    Member
    February 23, 2024 at 6:06 am

    There are different ways to build viscosity. You can do by mixing surfactants (as you mentioned, some anionic with specific amphoterics help you reach micellar arrangements that give some shear resistante, like worm-like micelles). There are several ecamples in the literature. Inorganic salts like sodium chloride help you reach these micellar structures faster. You can also use polymers to create entanglements between your micellar structures, or to just swell your solvent reducing movement between molecules.

    • oldman20

      Member
      February 25, 2024 at 7:57 pm

      yeah, anionic surfactant with sodium chloride always start point! afaik

      • This reply was modified 1 month, 4 weeks ago by  oldman20.

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