Home Cosmetic Science Talk Formulating Color and makeup Grinding coated pigments and other powders

  • Grinding coated pigments and other powders

    Posted by MelindaNicole on March 28, 2023 at 11:11 pm

    Can you grind pigments or powders that are coated or does it destroy them? For example, Titanium dioxide treated with dimethicone or talc treated with methicone?

    Should I grind iron oxides that are water dispersible or can it affect how they function and/or not necessary.

    I have had a foundation on my list of things to make for awhile and don’t want to screw the ingredients up before they go into the formula.

    Thanks in advance!

    niecie2k replied 1 year, 1 month ago 3 Members · 2 Replies
  • 2 Replies
  • Squinny

    March 29, 2023 at 1:01 am

    Aren’t these already in powder form? I have used these ingredients to make a face primer and there was no need to grind them and they mixed nicely into my product (mind you the one I made was anhydrous).

  • niecie2k

    May 5, 2023 at 1:11 pm

    I have had that exact same question for so long and still don’t have an answer. Not even just treated T.D., but things like magnesium stearate, boron nitride, serecite mica………..to grind or not to grind………that is the question.

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