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Why carbomers aren't used with pigments?
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 ?
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4 Replies
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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?
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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”
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I believe I moved it to formulating.
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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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