Laundry pods are coated with a water-soluble film mainly made from polyvinyl alcohol (PVA), a synthetic plastic polymer that dissolves in water during washing. This film, produced by extrusion and vacuum-forming techniques, holds highly concentrated detergent securely while enabling precise dosing. PVA films enable multi-chamber pods and provide durability until use, but pose environmental challenges due to microplastic pollution. Ongoing research aims to improve sustainability without compromising convenience.