{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,23]],"date-time":"2026-09-23T04:16:10Z","timestamp":1790136970577,"version":"4.0.1"},"reference-count":25,"publisher":"Wiley","issue":"4","license":[{"start":{"date-parts":[[2022,8,1]],"date-time":"2022-08-01T00:00:00Z","timestamp":1659312000000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Intern J of Cosmetic Sci"],"published-print":{"date-parts":[[2022,8]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Background and objective<\/jats:title><jats:p>Premature skin ageing, and skin hyperpigmentation are influenced by exogenous factors, such as ultraviolet radiation and blue light. In this study, we assess the protective effect of a sunscreen (TDF<jats:sup>\u00ae<\/jats:sup> Blu Voile Sunscreen) in protecting the skin against the harmful effects of blue light irradiation in vivo and through the in situ quantitative and qualitative evaluation of protein carbonylation in human skin explants.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methodology<\/jats:title><jats:p>The protective effect of the test product against blue light was first evaluated ex vivo on human skin explants. The treated and non\u2010treated explants were exposed to 14\u2009J\/cm<jats:sup>2<\/jats:sup> of blue light 460\u2009nm following which the protein carbonylation was evaluated by in situ epifluorescence imaging and separation by high\u2010resolution gel electrophoresis. To determine whether the test product could also protect against the immediate and persistent pigmenting effect of blue light, two randomized in vivo studies were conducted, which included respectively 17 subjects with a skin phototype of IV and V (Fitzpatrick classification) and 22 subjects with a skin phototype of IV, V, and VI (Fitzpatrick classification). The duration of the study for each subject was 2\u2009days (D1 and D2) for immediate observations and 5\u2009days (D1\u2013D5) for persistent observations. Specific zones on the subjects' back were either left non\u2010treated or treated with the test product and were then exposed to a unique dose of blue light 415\u2009nm. The onset of pigmentation between the treated and exposed zones was then assessed relative to the non\u2010exposed treated zone through colorimetric measurements of the Individual Typology Angle (ITA<jats:sup>o<\/jats:sup>).<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>Human skin explants treated with test product showed significantly lower levels of accumulated carbonylated proteins, with a protection of 82%, following exposure to blue light 460\u2009nm. Findings of the in vivo studies also indicated that the test product presented significantly better protective efficacy against immediate and persistent pigmentation induced by blue light 415\u2009nm.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>Hence, it can be concluded that the test product can protect against the oxidative stress as well as the immediate and persistent pigmentation induced by blue light.<\/jats:p><\/jats:sec>","DOI":"10.1111\/ics.12794","type":"journal-article","created":{"date-parts":[[2022,6,11]],"date-time":"2022-06-11T06:58:53Z","timestamp":1654930733000},"page":"464-476","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":11,"title":["The protective effect of a novel sunscreen against blue light"],"prefix":"10.1111","volume":"44","author":[{"given":"Veronique","family":"Francois\u2010Newton","sequence":"first","affiliation":[{"name":"Centre International de D\u00e9veloppement 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