Home Cosmetic Science Talk Formulating General Deodorant stick dries slowly on skin

  • Deodorant stick dries slowly on skin

    Posted by Zoya on April 17, 2024 at 8:21 am


    This is my first time making deodorant stick with sodium stearate. I have ~ 75% propylene glycol, 8% sodium stearate, 2% decyl glucoside, 07% preservative and 3% parfum oil, the rest is water. The consistency seems fine, but after applying it on the skin, it leaves a “wet” skin feel and dries slowly on the skin. How should I improve the formula to dry faster on skin without leaving a wet film?



    chemicalmatt replied 1 month ago 4 Members · 4 Replies
  • 4 Replies
  • fareloz

    April 17, 2024 at 8:24 am

    Reduce Propylene Glycol to 5%

  • LabGuy

    April 17, 2024 at 9:20 am

    Too much propylene glycol, try reducing it.

  • Zoya

    April 17, 2024 at 9:44 am

    Thank you! Around what percentage propylene Glycol should work better? 50-60%? Could I replace it with water or do I need something else?

  • chemicalmatt

    April 19, 2024 at 9:12 am

    Propylene glycol is not the “wet” problem, decyl glucoside is. DEL that surfactant (why add it in first place?) and fix the PG: water ratio at 2.0 to 2.5: 1, it will work fine. You don’t say which grade sodium stearate is used, but 8.0% seems high to me. Most of these start at 6.0% with little increase from there.

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