“The product life cycle describes the stages through which a new product enters the market: introduction, growth, maturity, and decline (Kerin, Hartley, 292). "Introduction occurs when the product is introduced, sales increase more slowly, and profits are minimal. The second stage is called the growth stage. The growth stage is where sales increase due to the number of new people using or trying the product The third stage, called maturity, is the opposite of the growth stage because sales increase slowly at high rates The last stage is called the decline stage The decline stage occurs when sales fall. because of consumers or when the product is no longer used.