Secondary packaging is an additional layer of packaging of products applied after the primary packaging to group a certain number of products into a cohesive SKU (Stock Keeping Unit).
Secondary packaging may be in the form of either commercial packaging or consumer packaging. Secondary commercial packaging is rarely seen by the end-user and it is not designed to appeal to them. Secondary consumer packaging is designed to appeal to consumers while still providing an additional protective layer for the product. This kind of packaging is designed to be attractive with colours and graphics that entice customers to make the purchase