Which major retail innovation in product packaging was introduced by Loop, disrupting traditional packaging models in 2019?

Product packaging has evolved dramatically over the past decade, not just in design but in environmental impact. Companies are increasingly judged on their sustainability efforts, with packaging being a highly visible component of their commitment. This poll tests your knowledge about recent innovations in product packaging that have disrupted traditional retail models while addressing growing consumer demands for environmental responsibility.

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Reusable container delivery system where consumers return empty packaging to be cleaned and refilled by manufacturers
Edible packaging made from seaweed that dissolves in water or can be consumed with the product
Blockchain-verified packaging that traces the entire sustainability journey of each product's container
Packaging that changes color when a product approaches its expiration date, reducing food waste