Plastic can be found everywhere in society. Nothing strange about that, because plastics are versatile materials that can be given almost any properties. They are also often light and inexpensive compared to other materials and last a long time. However, the diversity and variety of plastic additives can also make use of certain plastics challenging in circular flows. This guide provides hands-on tips, advice and good examples on the sustainable and circular use of plastics.The authors assume sole responsibility for the contents of this report, which therefore cannot be cited as representing the views of the Swedish EPA. Naturvårdsverket,