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Bispo-Dos-Santos K, Barbosa PP, Granja F, Martini MC, Oliveira CFS, Schuck DC, Brohem CA, Arns CW, Hares Junior SJ, Sabino CP, Proenca-Modena JL. Ultraviolet germicidal irradiation is effective against SARS-CoV-2 in contaminated makeup powder and lipstick. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY 2021; 8:100072. [PMID: 34635881 PMCID: PMC8487657 DOI: 10.1016/j.jpap.2021.100072] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2021] [Revised: 08/20/2021] [Accepted: 09/14/2021] [Indexed: 01/17/2023] Open
Abstract
Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) is mainly transmitted by airborne droplets generated by infected individuals. Since this and many other pathogens are able to remain viable on inert surfaces for extended periods of time, contaminated surfaces play an important role in SARS-CoV-2 fomite transmission. Cosmetic products are destined to be applied on infection-sensitive sites, such as the lips and eyelids. Therefore, special biosafety precautions should be incorporated into the routine procedures of beauty parlors and shops. Indeed, innovative cosmetics companies are currently searching for disinfection protocols that ensure the customers' safety in makeup testing. Here, we propose an ultraviolet germicidal irradiation (UVGI) strategy that can be used to reduce the odds of COVID-19 fomite transmission by makeup testers. It is well-known that UVGI effectively inactivates pathogens on flat surfaces and clear fluids. However, ultraviolet-C (UVC) radiation at 254 nm penetrates poorly in turbid and porous materials, such as makeup and lipstick formulations. Thus, we investigated the virucidal effect of UVGI against SARS-CoV-2 deposited on such substrates and compared their performance to that of flat polystyrene surfaces, used as controls. Concentrated infectious SARS-CoV-2 inoculum (106 PFU/mL) deposited on lipstick and makeup powder was completely inactivated (>5log10 reduction) following UVC exposures at 1,260 mJ/cm2, while flat plastic surfaces required 10 times less exposure (126 mJ/cm2) to reach the same microbicidal performance. We conclude that UVGI comprises an effective disinfection strategy to promote biosafety for cosmetics testers. However, appropriate UVC dosimetry must be implemented to overcome inefficiencies caused by the optical properties of turbid materials in lipsticks and makeup powders.
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Affiliation(s)
- Karina Bispo-Dos-Santos
- Laboratory of Emerging Viruses, Department of Genetics, Microbiology and Immunology, Institute of Biology, University of Campinas, Campinas, SP, Brazil
| | - Priscilla P Barbosa
- Laboratory of Emerging Viruses, Department of Genetics, Microbiology and Immunology, Institute of Biology, University of Campinas, Campinas, SP, Brazil
| | - Fabiana Granja
- Laboratory of Emerging Viruses, Department of Genetics, Microbiology and Immunology, Institute of Biology, University of Campinas, Campinas, SP, Brazil
- Biodiversity Research Center, Federal University of Roraima, Boa Vista, RR, Brazil
| | - Matheus Cavalheiro Martini
- Laboratory of Emerging Viruses, Department of Genetics, Microbiology and Immunology, Institute of Biology, University of Campinas, Campinas, SP, Brazil
| | | | | | - Carla Abdo Brohem
- The Boticário Group, Research & Development, São José dos Pinhais, PR, Brazil
| | - Clarice Weis Arns
- Animal Virology Laboratory, Department of Genetics, Microbiology and Immunology, Institute of Biology, University of Campinas, Campinas, SP, Brazil
| | | | | | - Jose Luiz Proenca-Modena
- Laboratory of Emerging Viruses, Department of Genetics, Microbiology and Immunology, Institute of Biology, University of Campinas, Campinas, SP, Brazil
- Experimental Medicine Research Cluster, University of Campinas, Campinas, SP, Brazil
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