["It all starts with welcoming": access, acceptability and elements for the promotion of the health of adolescents and young people in primary care].

This article shows a qualitative study on the access of young people to public health services in the cities of Santos, São Paulo, and Sorocaba, São Paulo State, Brazil. The objective was to identify the meaning attributed to access experiences in order to characterize a set of criteria for the acceptability of health care practices. The methodological instruments used were the observation of daily life in the basic health units and in the assigned territories and 34 semi-structured interviews with young people between 15 and 24 years old. In addition to structural barriers that restrict presence in these services (long waiting times, difficulty in scheduling appointments and unsatisfactory care outcomes), the young people's narratives emphasize the interactive nature of care, the observance of the specificities of adolescence and the role of health services in the construction of themselves, through the intersubjective engendering of resources for a happier life. They affirm the centrality of their recognition as subjects of rights, co-producers of comprehensive health care, which contributes with learning for living. To this end, satisfactory care must promote their participation in the therapeutic process, provide information and guidance that enable dialogued decisions and, in a broader dimension, the development of autonomy.