Home Cosmetic Science Talk Formulating Problem with PEG-30 Dipolyhydroxystearate

  • Problem with PEG-30 Dipolyhydroxystearate

    Posted by Nastaran on November 29, 2023 at 2:29 am

    Hello All, I’m trying to use Cithrol DPHS (1/4%) as an emulsifier with Cithrol PG32IS (2%) as a co-emulsifier in W/O tinted sunscreen, unfortunately its final texture becomes elastic. I know Its related to Cithrol DPHS, but I cannot reduce amount of it cause the emulsion becomes unstable, So what should I do?

    I would appreciated If you could help me.

    chemicalmatt replied 2 months, 3 weeks ago 2 Members · 1 Reply
  • 1 Reply
  • chemicalmatt

    November 29, 2023 at 2:47 pm

    Hard to help without knowing the other components: the oil load and relative polarities involved, water activity, salts, glycols. I will say the two low HLB emulsifiers you cite are not related to one another. One is a PEFA the other a PEGylated fatty ester. If I read correctly you are using 0.25% DPHS? If so that is not nearly adequate. I would use more of that and less of the PEFA starting with a 2:1 ratio.

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