A person's likes and dislikes changes from time to time or, says it is very unstable. Anyone having a need and is willing and able to sacrifice money is called consumer. By ignoring the preferences of the consumer the business community cannot possibly fulfill its obligations in a responsible manner. The effect of various external and internal factors on a consumer can be understood by different psychological theories. External factors include social habitat, correspondence and friend circle etc. Internal factors comprise in a consumer psyche and others like lifestyle, trends, personality, motivation etc. have a considerable on the response of the consumer. This research is something about that explains how a buying process begins and the end result of buying decision. With the help of this study the relation of consumer behavior with the product, price, promotion etc is revealed. Thus, it is marketing mix which is indispensable for the promotion of product/services in an organization. Research Paper – The study on hair oils is also trying to find Consumer Preferences about different features of hair oils and how Packaging, Quantity, Easy Availability and Variety are affecting the sale of hair oil's. Continuing scientific discoveries and social changes, over the year been greatly responsible for the developments that have taken place in the industry since, and brought hair oil, once a luxury, within the reach of everyone.