Packaging serves important branding, marketing, and communication functions. It identifies the brand, differentiates the product from competitors, and communicates value to customers. Packaging must attract attention on retail shelves among many similar products. Case studies show how changes to packaging design and colors can increase market share by making key brand messages like "caramel inside" more noticeable. Packaging is also a form of silent salesman that can influence purchasing decisions through images and information on the package.