With the purpose of complex research of soft medicinal product-gel for treatment of wounds in the II phase of the wound process the assessment of the indicators, which are specified in the corresponding normative documents and allow to control comprehensively the quality of the product developed during its shelf-life, has been carried out. During the experiment the methods regulated by such normative documents as the SPhU and SUC 24.5-37-103:2004 "Cosmetic Gels" have been used. The gel developed was stable according to the experimental indicators within 2 years under the modes studied: the pH value was stable for all the series of the gel samples and was within the range of 5.0-7.5; the quantitative content of the substances was within the QCM project; the mass of a gel tube did not changed. After centrifugation the gel breaking was not observed, the temperature change did not also affect the stability of the product developed during the study. The data obtained allowed to recommend the shelf-life of 2 years at the room temperature in aluminium tubes. Based on the study of the structural-mechanical properties of the gel samples during storage the complete flow rheograms have been built, according to their data it can be seen that during the period under research the gel samples have not practically changed their rheological characteristics. It indicates the strength of the gel structure and the right choice of active substances and excipients, their concentrations, and the rational technology. The mechanical stability values of the product developed during the whole storage period have not practically changed, and it indicates the drug stability in the process of storage, as well as the absence of interaction between the active substances. According to the research data both after preparation and during the long storage of the gel the indicators obtained characterize it as a structured system with positive consumer and structural-mechanical properties.

The aim. The study encompassed some aspects related to perfumes use, which can potentially influence the individual perfume choice, in particular, among different age groups of the Ukrainian population. Factors related to perfumes choice, the state of awareness of respondents regarding quality, safety, and existing stereotypes regarding the characteristics of perfumes and potential harmful effects on the human body were investigated. Materials and methods. The analysis was performed on a sample of 124 residents of Ukraine. Respondents, who were randomly selected, were offered a questionnaire, developed by us, which included 15 items on the demographic characteristics of the subjects and questions related to the perfume use of and stereotypes about them. The Pearson chi-squared (χ2) test was used to analyze the relationships between qualitative characteristics. Results and discussion. About 98 % of surveyed persons in Ukraine use perfumery. Associations were found between age and the probability of purchase by the study participants of non-original perfume products and awareness of the safety of various perfume products. It has been established, that the determining factors when choosing a perfume is a certain scent, while the brand is given secondary importance. An increase in the effect of the brand in older age groups of the population has been demonstrated. Behavioral features of perfume use have been established: in younger women, it is associated with increased self-esteem and the influence of social networks, with age, the focus shifts to the desire for a positive effect on the mood from the use of a certain fragrance. However, in all age groups, the main purpose of perfume using was to improve the emotional state. Middle-aged women are more democratic in choosing perfumery with a specific gender orientation. Conclusions. For the first time in Ukraine, a pilot study was conducted to find possible associations between some biological, behavioral and demographic characteristics and the perfume use. Such factors as age and education level are promising for further analysis of the selected issues

Objective: The purpose of the research was to optimize technology for producing a magneto controllable nanocomposite Ag@Fe3O4 with modern physicochemical and therapeutic requirements using methods of mathematical design of the experiment. Methods: To optimize the synthesis process of the nanocomposite Ag@Fe3O4, the method of factor experiment was used. Mathematical calculations were performed using the STATISTICA 10 StatSoft Inc. system and Excel spreadsheet processor of MS Office 2019 Professional Plus. Results: Based on the study of technological parameters of nanocomposite synthesis Ag@Fe3O4 (16 experiments) a regression equation was obtained: Y = 106.415+0.038X1+4.448Х2+1.806Х3–1.593Х4–18.945Х5–109.980Х6. By the use of this equation the synthesis parameters were optimized with the help of steepest ascent method. It was found that the maximum yield of Ag@Fe3O4 can be achieved under the following conditions: X1 (magnetite synthesis time, min)–40; X2 (glucose content in solution,%)–10; X3 (temperature of the Tollens reaction, °С)–65; X4 (magnetite silver coating time, min)–30; X5 (pH, units)–8.5; X6 (rate of addition of ammonia, mol/min)–0.36. Conclusion: Using mathematical design of the experiment, a technology was developed for producing Ag@Fe3O4 with modern physicochemical and therapeutic requirements.