Home Cosmetic Science Talk Formulating Why carbomers aren't used with pigments?

  • Why carbomers aren't used with pigments?

    Posted by HAL49 on May 25, 2023 at 11:18 pm

    Does someone knows why usually carbomers aren’t paired with pigments , I know there are some stability and texture incompatibilities with uncoated TiO2 but does someone know if this also happen with other pigments such as iron oxides , ultramarines , carmín etc ?

    • This discussion was modified 9 months, 1 week ago by  Perry44.
    Perry44 replied 9 months, 1 week ago 3 Members · 4 Replies
  • 4 Replies
  • gordof

    May 26, 2023 at 3:21 am

    Carbomers normally do not tolerate Ions very well. maybe that is the way they are normally not combined with Iron Oxides and so on you put a lot of Ions into your system and I would guess they destabilize your gel a lot.

    Another reason could be that Carbomer Gels are normally not very water-resistant formulations and it is difficult to get them to be one, while makeup products normally need to be water-resistant to a certain point otherwise they will be smeared all over after a few hours.

    I found a carbomer formulation for a black i-liner Ultra Black Eyeliner (Formulation #CC-E0016[EU]) by Lubrizol - Personal Care & Cosmetics (ulprospector.com) that uses carbopol aqua. maybe it depends. Does someone have any other ideas why it is not used that often together?

  • HAL49

    May 27, 2023 at 1:10 pm

    Thank you @gordof !! Those are very good reasons to not use them , regarding the ions incompatibility Do you think then that maybe hydrophobic coated pigments would have a better compatibility as they not dissolve in water?

    @Perry44 I just notice I mistakenly put this in “innovation” , is there a way to move it to “formulating”

    • Perry44

      May 30, 2023 at 12:17 pm

      I believe I moved it to formulating.

  • gordof

    May 30, 2023 at 12:44 am

    I am not sure.

    I would guess hydrophobic Cotet Pigments will make it easier but I don’t have any experience with that kind of system sorry maybe someone with more experience in color cosmetics can give additional advice if you want to combine carbomers with color pigments.

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