Which packaging innovation, first successfully commercialized in the 1950s, dramatically changed retail by allowing consumers to dispense products with the push of a button?

Throughout history, packaging design has played a crucial role in product preservation, transportation, and marketing. One particular packaging innovation in the mid-20th century revolutionized how consumers interacted with everyday products, creating a seismic shift in consumer behavior and retail operations. Test your knowledge about this game-changing packaging development that transformed multiple industries and continues to influence modern retail packaging strategies.

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The aerosol spray can (using compressed gas propellant)
The plastic squeeze bottle with flip-top cap
The roll-on applicator bottle
The pump-action dispenser