Today, social media affect all spheres of communication and business, causing changes in all of us. These are platforms where, among other things, information can be shared and obtained on certain topics. Many individuals transfer their lives to social media and thus influence others, but on the other hand, social networks and other people's opinions influence the attitudes, opinions, and thus the buying habits of individuals. In this research paper, a quantitative method using a survey questionnaire was used to examine whether social networks influence the decisions of individuals during online shopping and in what way the influence occurs. Also, theoretical aspects of social networks, types and their development throughout history are presented. Furthermore, the process of making a purchase decision, the theoretical concept of the consumer, and the relationship between consumers and social networks are explained in more detail. The research results show that social networks do not have a strong influence on an individual during the purchase of a product or a service. But on the other hand, social networks are a decisive tool for making individuals aware of the brand, the products, or the services it offers.