Ca
Calcium Sodium Borosilicate
Calcium Sodium Borosilicate
A glass ingredient that adds bulk to powders, and sparkle when coated with pigment.
What it does
It’s glass made from silica, boron, calcium and sodium, ground into fine flakes. In makeup it fills out powders, and coated with a mineral pigment it gives shimmer and sparkle.
The evidence, graded
expert consensusUS safety reviewers (2013) assessed five borosilicate glasses, used mostly to add bulk; calcium sodium borosilicate is named in their conclusion. They’re inert, won’t significantly pass into skin, and don’t irritate or cause allergy. An eye shadow with calcium sodium borosilicate didn’t irritate skin or eyes or cause allergy when used daily for 4 weeks. They judged the group safe as used.Becker 2013 · International Journal of Toxicology ↗
Graded per the methodology: strong · moderate · emerging · expert consensus. A weak source on a strong claim gets the weaker label.
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