What it is
This is a synthetic copolymer built from acrylamide, DMAPA acrylate, and methoxy PEG methacrylate units that together give it both thickening and film-forming properties. In sunscreens and other emulsions it helps stabilize the formula, control viscosity, and form a flexible film that improves the evenness and durability of the layer left on skin. It is used at low to moderate levels as a rheology and texture aid.
Safety & warnings
Large polymeric film formers of this type are generally non-irritating and are not absorbed through skin owing to their size. They are not considered comedogenic at normal use levels.
Origin & sourcing
Synthetic; produced by copolymerization of acrylic and PEG-functional monomers.
Questions everyone asks
What role does this copolymer play in sunscreen?
It thickens and stabilizes the emulsion and forms a flexible film that helps the product spread and wear evenly.
Does it affect SPF directly?
It is not a UV filter, but by helping form an even film it can support uniform coverage of the actives.