{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,6]],"date-time":"2026-10-06T01:28:50Z","timestamp":1791250130305,"version":"4.1.0"},"reference-count":0,"publisher":"S. Karger AG","license":[{"start":{"date-parts":[[2009,10,6]],"date-time":"2009-10-06T00:00:00Z","timestamp":1254787200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/karger.com\/pages\/terms-and-conditions"},{"start":{"date-parts":[[2009,10,6]],"date-time":"2009-10-06T00:00:00Z","timestamp":1254787200000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/karger.com\/pages\/terms-and-conditions"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Dermatology"],"abstract":"<jats:p>Background: Sun exposure has a beneficial effect on acne vulgaris, but it is not clear which wavelengths contribute to the favourable effect. Objective: The aim of the study was to investigate the effect of visible light on acne vulgaris and define the most effective wavelengths. Methods: Thirty patients (15 men and 15 women) with mild to moderate acne vulgaris, involving the face and\/or the back and\/or the chest, were treated with three different light sources. They were treated 3 times a week, for a total of 7 weeks, each field for 20 min per session. Results: All the light sources using \u2018full spectrum\u2019, green and violet improved the acne, leading to 14% (p &gt; 0.10), 22% (p &lt; 0.05) and 30% (p &lt; 0.02) improvement, respectively. No statistically significant differences between the three different light sources were found, although there was a tendency that violet light was better than the other light qualities. No side-effects were observed. Conclusion: Visible light is a moderately effective alternative for treatment of acne vulgaris.<\/jats:p>","DOI":"10.1159\/000246114","type":"journal-article","created":{"date-parts":[[2009,10,7]],"date-time":"2009-10-07T07:08:20Z","timestamp":1254899300000},"page":"256-260","source":"Crossref","is-referenced-by-count":104,"title":["Phototherapy of Acne Vulgaris with Visible Light"],"prefix":"10.1159","author":[{"given":"V.","family":"Sigurdsson","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"A.C.","family":"Knulst","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"H.","family":"van Weelden","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"127","published-online":{"date-parts":[[2009,10,6]]},"container-title":["Dermatology"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.karger.com\/Article\/Pdf\/246114","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/karger.com\/article-pdf\/doi\/10.1159\/000246114","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,4,30]],"date-time":"2026-04-30T09:13:39Z","timestamp":1777540419000},"score":1,"resource":{"primary":{"URL":"https:\/\/karger.com\/article\/doi\/10.1159\/000246114"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2009,10,6]]},"references-count":0,"URL":"https:\/\/doi.org\/10.1159\/000246114","archive":["Portico"],"relation":{},"ISSN":["1018-8665","1421-9832"],"issn-type":[{"value":"1018-8665","type":"print"},{"value":"1421-9832","type":"electronic"}],"subject":[],"published":{"date-parts":[[2009,10,6]]}}}