Social networks have penetrated deep into people's lives. They have changed the way information is transmitted, disseminated and received. The number of users on social networks is growing every day. The media create a relationship of trust with customers trough marketing and web promotion by creating new trends that users sometimes conciously and sometimes unconsciously follow.Constant exposure to perfect „sculpted“ bodies and flawless youthful skin trough social networks leads to the aspiration to achieve this ideal of beauty. The popularization of aesthetic procedures is strongly influenced by the media, which present the ideals of beauty on a daily basis. In order for a person to ultimately feel better in their skin, cosmetic surgery can offer corecctive procedures to parts oft he body that disrupt a person's physical appearance and psychological state. Research on social networks as a decision factor in the selection of cosmetic surgeries was conducted at the Bagatin Polyclinic trough an online survey in the period from January to April 2021. 103 respondents participated and the questionanaire was anonymous and voluntary. It contained 35 questions divided into 6 categories. The results show that the majority of respondents use social networks, there is a positive attitude towards the decision for cosmetic surgery and that social networks have contributed to the decision for cosmetic surgery for people who use social networks. According to this research, the social network that most creates a relationship of trust with users trough marketing and web promotion is instagram.