Which innovative packaging design feature did the World Wildlife Fund (WWF) implement in their limited-edition soap that transformed after use to highlight endangered species conservation?

In 2018, a wildlife conservation organization made headlines with an innovative product packaging design that physically changed after purchase to raise awareness about endangered species. This groundbreaking campaign won multiple awards in sustainable packaging design and sparked conversations about the role consumer products can play in conservation messaging. Test your knowledge about this unique eco-friendly packaging initiative that blended product design with wildlife advocacy.

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A soap wrapper that dissolved in water to reveal hidden facts about endangered species
A soap bar with an animal shape inside that only appeared after continued use
A soap wrapper with heat-sensitive ink that revealed endangered species statistics when touched
A soap bar that gradually revealed a black embossed image of an endangered species as it was used up, symbolizing their disappearance