SCIENTIFIC RESEARCH ON THE IMPACT OF INSTRUMENT TREATMENT ON SERVICE QUALITY AND CLIENT SAFETY

Purpose. The purpose is to provide a scientific basis for the impact of instrument processing, including disinfection and sterilization, on the quality of household and aesthetic services and the level of customer safety. The study is aimed at substantiating the importance of proper instrument treatment as a critical component of infection prevention, client trust, and institutional reputation in the beauty industry. Materials and methods. The study analyzes the effectiveness of physical (dry-heat sterilizers, autoclaves, ultrasonic baths) and chemical (antiseptic solutions) methods for instrument processing used in hairdressing services. It also examines the regulatory framework in Ukraine, including national sanitary regulations, WHO recommendations, and ISO standards. The research is supported by a review of scientific literature on best hygiene practices. Attention is paid to the role of professional training, internal monitoring systems, and client education as part of a comprehensive hygiene strategy. Results. The analysis of current literature suggests that not all salons adhere to the full cycle of instrument sterilization, which leads to decreased client trust, lower satisfaction with services, and increased legal and health risks. Evidence from various sources shows that the introduction of hygiene protocols, the use of modern sterilization technologies, regular staff training, and transparent communication about hygiene procedures significantly improve service quality and increase client retention. Client perception of cleanliness is shown to be closely tied to their loyalty and choice of service provider. Conclusions. There is a direct correlation between proper instrument sterilization and client safety and satisfaction in hairdressing salons. A systematic approach, including investment in certified equipment, establishment of internal regulations, periodic professional development, and clear communication with clients, enhances both the competitiveness and reputation of beauty establishments. Ensuring proper hygiene standards should be considered a fundamental aspect of quality service and a strategic priority for sustainable business development in the beauty sector.