Is all Mica lip, eye, and generally safe?

From my understanding mica is considered very safe for use in cosmetics. Coloured mica, however, seems to be normal mica mixed with other colourants like iron oxides, dyes, or ultramarines. Ultramarines are not classified as safe for use on the lips, I believe, but some places that sell coloured mica don't list the ingredients. Is a mica that is mixed with a nonlip safe ingredient still safe for the lip? If yes, why?


  • PerryPerry Administrator, Professional Chemist
    Yes, mica is generally approved for use in cosmetics.

    No, I don't think mixing mica with a nonlip safe ingredient is approved. Companies that are doing that are taking a regulatory risk.
  • Bill_TogeBill_Toge Member, Professional Chemist
    from my experience, the pigments in these coloured micas are deposited onto the surface of the mica in thin layers, rather than being mixed with them in the conventional sense; I don't honestly know how this affects the biochemistry, but major manufacturers (Merck, BASF, Eckart etc.) routinely highlight regulatory restrictions for these pigments in their literature just to be on the safe side

    UK based cosmetic chemist with 13 years' experience at the bench. I've worked with pretty much everything apart from pressed powders, soap, solid lipstick and aerosols.
  • SpongeSponge Member
    Hopefully no one is creating products that utilize colored mica or unknown origin. 

    No, once you add something “not safe” it’s... not safe. ;)
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