Definition proposed in UNEP/PP/INC.3/INF/1: Concept underpinning producer and user responsibilities whereby the entities that introduce products or packaging that become litter are held responsible for arranging the collection and waste management of these materials as well as additional activities to reduce waste. Source: Scaling up circular strategies to achieve zero plastic waste in Thailand (WWF Thailand 2020) (accessible at https://wwfint.awsassets.panda.org/downloads/zero_plastic_waste_in_thailand_en.pdf).