Luminescent sanitizing compositions

The hands of patients and healthcare professionals are the main vector for the spread of nosocomial infectious diseases, and their correct disinfection with hydroalcoholic hand gel is the best solution. However, 89% of people who sanitize their hands with hydroalcoholic gel do not clean the whole surface. To improve prevention strategies against COVID-19 and other topically transmissible infectious diseases, it is critical to monitor the quality of the sanitization process (at hospital entrances, establishments, when cleaning surfaces...). However, there is currently no solution to ensure correct hand/surface washing in in an immediate, safe, routinely and economical manner. The invention describes the compositions, preparation methods and preferred uses of sanitizing products that simultaneously allow hands and/or surfaces, objects, footwear, etc. to be sanitized while monitoring the quality of the sanitization process by means of luminescence in an immediate, safe, routinely and economical manner. The invention describes several sanitizing compositions, among which hydroalcoholic gel stands out, characterized by comprising a luminescent agent and a minimum content of 70% by weight of ethanol and/or isopropanol, in addition to other products such as thickeners, emulsifiers, etc. The luminescent agent comprises a luminescent reagent (preferably fluorescein) in an amount between 0.1 and 10% by weight with respect to the total weight of the luminescent agent and a polymeric and/or inorganic matrix (preferably SiO2 nanoparticles and/or TiO2) in an amount between 90 and 99.9% by weight with respect to the total weight of the luminescent agent, and where the luminescent reagent is embedded and/or bound to the matrix. This matrix ¿of a polymeric or inorganic nature¿ is capable of embedding and/or joining the luminescent reagent to i) render the luminescent reagent inert, preventing its solubility and limiting its ability to interact with the human body, ii) preventing the reagent from permeating inside of the human body through the skin due to the size it acquires, iii) improving the efficiency and stability of its luminescence by including a matrix with a high refractive index. The luminescent agent, which is in the form of particles or aggregates of particles, has a particle size greater than 200 nm, thus guaranteeing that both the sanitizing agent and the sanitizing product derived from it will present practically zero skin permeability, which implies the total dermatological safety of the composition.