Bismuth Oxychloride
Mineral (makeup pearl) · INCI: Bismuth Oxychloride
Reviewed by Elysiana Aguilar, master esthetician
How we read it
Known to clog pores. If you break out easily, this is the one to skip.
Is Bismuth Oxychloride comedogenic?
Yes. Bismuth Oxychloride is a known pore-clogging ingredient, and we read it as highly comedogenic. If you're acne-prone, it's worth avoiding, especially when it sits near the top of an ingredient list.
Why we read it this way
A pearlescent mineral common in mineral makeup. Acne-safe lists flag it and some people find it irritating, though comedogenicity evidence is mixed.
The nuance
If mineral makeup breaks you out, this is a common suspect, but reactions vary.
Related ingredients
One ingredient rarely tells the whole story. The acne ingredient checker reads everything in a product at once, the pore-clogging ingredients list has the rest of what we flag, and there is more on what comedogenic means. Also in the guides: What acne actually is.