Which retail innovation first introduced the now-popular 'package-free' shopping concept to the natural products industry?

The natural products industry has undergone remarkable transformations in retail innovation over the past decade. From zero-waste packaging initiatives to carbon-neutral supply chains, retailers focused on natural and sustainable products have pioneered practices that are now influencing mainstream retail. Test your knowledge about a groundbreaking retail innovation that changed how natural products are marketed and sold!

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Lush Cosmetics' 'Naked' product line (2007)
Bulk Barn's reusable container program (2017)
Original Unpackaged store in London (2006)
Whole Foods Market's bulk section redesign (2010)