DPA-40 is an acrylate copolymer composed of 40% solid content and 60% ethanol. It is an NMPA-registered EWG GREEN grade safe raw material used when filming and solidifying liquid formulations of cosmetics and pharmaceuticals.
 
It is mainly used for the base polymer of peel-off packs, and because it is ethanol-based, it dries quickly and is very easy to work with.