Product Life Cycle A product life cycle is a model that graphs the four stages that a product or service goes through during the "wfe" of its marketabilty. (t) introduction, (2) growth, (3) maturity, and (4) decline. Throughout these different stages, marketers have to work extremely hard to innovate and chango their marketing strategios. Once a product has been developed and tested, it goes to market. There it may pass through a product iffe cycle of four stages: introduction, growth, maturity, and decline. This cycle is a theoretical model of what happens to sales and profits for a product class over time. However, not all individual products follow the life cycle, and particular brands may act differently, Nonetheless, the product life cycle may provide some basis for anticipating future market developments and for planning marketing strategies. Different stages in the product life cycle call for diffecent marketing strategies. Match each brand and description to the stage in the product life cycle and the eloment of the marketing mix illustrated by the description. Rusk Shampoo has maximized its salos beyond just specialy salons to include mass merchants like Target Stores