In the current legislation there is no concept of cosmetology services, in science there is also no consensus on their content. In connection with this, the author sets the goal to investigate this concept as a private-law category, to determine its content and specifics. The main methods of the study were a comparative legal method and a method of system analysis. Results of the study. A complex analysis of private legal acts containing norms regulating cosmetology services as well as relations arising in the course of their provision is carried out. Various scientific positions in the field under study are examined, and as a result, the content of cosmetological services is determined, and their classification is carried out. Based on the analysis of the current legislation in the field of health, the specificity and correlation of such categories as "cosmetology services" and "cosmetic services" are defined. The main feature of cosmetic services is revealed, which is connected not with violation of the integrity of the human skin, but only with hygienic care of the external appearance. As a result of the study, it was concluded that the object of regulation of both cosmetological and cosmetic services is the appearance of a person. But, despite the general object of regulation, these are different concepts, because cosmetology services, unlike cosmetic services, are a kind of medical. In addition, the author carried out a classification of cosmetology services, which include therapeutic (curative) and surgical (operational) services. Surgical services, in turn, are divided into the following varieties: mandatory, at the request of the patient, rehabilitation and reconstructive. Scope of the results obtained. The results of the research can be applied for the purposes of private legal regulation of relations that arise in the process of providing cosmetology services, when lecturing, developing educational and methodological aids in civil and medical law, teaching legal disciplines related to the activities of medical organizations, as well as in lawmaking when making changes in the current legislation.