This article examines the scientific and technological contributions of Iuliia Gorbacheva to the development of safer and more environmentally responsible nail care systems. Her research integrates material science, photopolymerization physics, device engineering and dermatotoxicology into a unified framework that links coating composition, curing dynamics and user safety. The analysis focuses on three core domains. The first concerns chemical and material interactions between coating components and the keratin structure of the nail plate, including the role of biodegradable polymers in reducing toxic exposure and microplastic generation. The second explores the photophysical and kinetic principles governing gel polymerization, emphasizing how spectral alignment, heat release and diffusion limitations affect curing quality and long-term nail health. The third addresses intelligent UV and LED device engineering, highlighting sensor feedback, adaptive control and restricted irradiation as mechanisms that improve curing precision while minimizing unnecessary exposure.