According to Aaker (1996), brand awareness is a significant and sometimes underestimate antecedent of brand equity. It affects customers' perceptions, attitudes and reflects the salience of the brand in the customer's mind. However, some scholars defined brand awareness as the power to link the brand to a product category (Mourad, Ennew and Kortam,2010). In some contexts, it can drive customers to choose another brand and even change customer's loyalty(Aaker, 1996).