The purpose of this chapter is to determine the factors influencing the online consumer buying behavior towards essential oils in Penang as there is dissonance between what the consumers want and what has been made available in the purchase of essential oils. There are four factors influencing the online consumer buying behavior that are being evaluated in this research which are brand image, price, quality, and online advertisement. Past literatures have been reviewed on the factors to understand consumers' preferences that leads to consumer buying decision. This study adopted the theory of reasoned action (TRA) as the grounded theory. Questionnaires will be used to collect consumers' response for further testing and analysis to test the relationship and strength of factor variables by using the outlined research methodology.