In 1847, the company debuted the first molded chocolate bar, ... the surface of solid chocolate looks almost like a photo sent back from Mars by the Curiosity Rover.

Most popular candy bar wrappers have undergone major makeovers over the years. From Hershey's milk chocolate bars to Snickers, here's what popular candy bars looked like when they first came out.

The emoji-filled redesign marks the first time Hershey’s has altered its milk chocolate bar design since it first went on sale in 1900. But, sad face, it’s not a permanent change.