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Home Cosmetic Science Talk Formulating Color and makeup Putting Microspheres through shear force

  • Putting Microspheres through shear force

    Posted by cecilia on May 11, 2023 at 3:03 am

    Good day,

    I hope someone can give me the correct info, I have two ingredients that go into our face powders, foundations and eyeshadows.

    The previous cosmetic chemist told the owner that these two ingredients can NOT be milled or pulverized through our hammer mill, and when I took over I did as I was told, but now that I am a qualified cosmetic chemist it just does not make sense to me as the process for making the products involves milling and pulverizing.

    Please can someone advice me if Silica Microspheres and <font color=”rgba(0, 0, 0, 0)” face=”inherit”>Polymethylsilsesquioxane may or may not under go shear force such as hammer </font>pulverizing or triple roll milling? <font color=”rgba(0, 0, 0, 0)” face=”inherit”> </font>

    <font color=”rgba(0, 0, 0, 0)” face=”inherit”>Your advice will be greatly appreciated, and if the effect of the ingredients will not be effected, my processing will be made so much easier. </font>

    <font color=”rgba(0, 0, 0, 0)” face=”inherit”>Thanks in advance. </font>

    gordof replied 1 week, 6 days ago 2 Members · 1 Reply
  • 1 Reply
  • gordof

    May 16, 2023 at 7:33 am

    I would suggest you, contact the supplier of those microspheres and explain to him your process and what you have in mind for doing to the raw material. I think they will give you a profound answer and reason if you can or cannot do what you are planning to do.

    Some Microspheres can be shattered by harsh energy input to the formulation.