This essay provides a comprehensive analysis of demand and supply principles, using Polo Mints as a case study. It begins with an introduction to the fundamental concepts of demand, supply, and their interaction in determining market prices and equilibrium. The essay then delves into the factors that cause shifts in both the demand and supply curves, including consumer income, tastes, population changes, the prices of related goods, consumer expectations, the cost of factor inputs, the number of sellers, technological advancements, and supplier expectations. The analysis applies these factors specifically to the market for Polo Mints, evaluating how each element influences its price and the quantity demanded and supplied. The essay illustrates these concepts with diagrams and discusses the impact of various market forces on the equilibrium point, providing a detailed understanding of how supply and demand dynamics shape the market for a specific product.