What it is
This ingredient is a copolymer built from long-chain (C12-22) alkyl acrylate monomers and hydroxyethyl acrylate. In formulas it functions as an emulsion stabilizer and film former, helping hold oil and water phases together and contributing to an even, durable cosmetic film on the skin. It is commonly seen in sunscreen lotions and sprays where it supports stability and a uniform feel.
Safety & warnings
As a high-molecular-weight polymer it stays on the skin surface and has low irritation and sensitization potential. It is not a fragrance allergen and is not associated with comedogenicity.
Origin & sourcing
Synthetic; produced by polymerization of acrylate monomers.
Questions everyone asks
What role does this copolymer play in sunscreen?
It stabilizes the emulsion and forms an even film, helping the product spread uniformly and stay consistent over time.
Is it a UV filter?
No, it provides no sun protection; it is a texture and stability ingredient that supports the filters in the formula.