Ac
Acrylates/Stearyl Methacrylate Copolymer
Acrylates/Stearyl Methacrylate Copolymer
A texture polymer — thickens and stabilizes a formula, drying to a flexible film that controls spread.
What it does
A synthetic polymer with long fatty side chains that let it work with both oil and water. It thickens and steadies a product and dries to a flexible film that helps it set and controls how far it spreads.
The evidence, graded
expert consensusUS safety reviewers (2019) assessed 126 acrylates copolymers, which products use mostly to form a film and often to thicken. Their conclusion lists all 126 by name, sodium polyacrylate and acrylates copolymer among them. They judged all 126 safe as used, in products made not to irritate, as their 2002 report had. They also said makers shouldn’t make these polymers in benzene.Fiume 2019 · Cosmetic Ingredient Review ↗
Graded per the methodology: strong · moderate · emerging · expert consensus. A weak source on a strong claim gets the weaker label.
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