As of July 3, single-use plastic products marketed in the EU/EEA must comply with the requirements and restrictions of Directive 2019/904 on the Reduction of the Impact of Certain Plastic Products on the Environment (“Single-Use Plastic Directive” –  “SUPD”).  To help Member States implement the SUPD into their national laws and apply its requirements, on May 31, 2021, the European Commission published its long-awaited Guidelines on the Scope of the SUPD.  The Guidelines take different and controversial approaches on the scope the SUPD and the nature of plastics and continue to leave important issues unanswered.