What it is
This ingredient is a cross-linked acrylic polymer typically supplied as fine, often spherical microbeads. The smooth particles roll over the skin to improve slip and impart a soft, powdery, matte feel while helping diffuse light for a soft-focus appearance. In sunscreens it is used to refine texture and reduce a heavy or greasy after-feel.
Safety & warnings
As an inert, insoluble polymer powder it is generally well tolerated and not associated with sensitization at typical use.
Origin & sourcing
Synthetic; produced by polymerizing and cross-linking methyl methacrylate with glycol dimethacrylate.
Questions everyone asks
What does this crosspolymer do in sunscreen?
It provides smooth spherical particles that improve slip, give a soft matte feel, and create a soft-focus finish on skin.
Is it a soluble ingredient?
No. It is an insoluble acrylic polymer powder dispersed in the formula.