In 2006, sales were dropping dramatically for Centrum Multivitamins with their BOGO product. The problem was that the consumers couldn't easily identify what was in the package and why it was so expensive. 

During the conceptual phase, I had an ah-ha moment and presented the idea of printing the bottles right on the package so the consumers could easily understand the offering while breezing through the aisles in the pharmacies. 

My design solution was a huge success at the time and the concept is still in production after 16 years. :)