Hair color changes and protein damage caused by ultraviolet radiation

dc.creatorNogueira, ACS
dc.creatorJoekes, I
dc.date2004
dc.dateMAY 27
dc.date2014-11-13T13:52:15Z
dc.date2015-11-26T18:07:46Z
dc.date2014-11-13T13:52:15Z
dc.date2015-11-26T18:07:46Z
dc.date.accessioned2018-03-29T00:49:54Z
dc.date.available2018-03-29T00:49:54Z
dc.identifierJournal Of Photochemistry And Photobiology B-biology. Elsevier Science Sa, v. 74, n. 41700, n. 109, n. 117, 2004.
dc.identifier1011-1344
dc.identifierWOS:000221917900006
dc.identifier10.1016/j.jphotobiol.2004.03.001
dc.identifierhttp://www.repositorio.unicamp.br/jspui/handle/REPOSIP/68551
dc.identifierhttp://www.repositorio.unicamp.br/handle/REPOSIP/68551
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/68551
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1293666
dc.descriptionUltraviolet and visible radiations are known to damage hair. However, quantitative data relating damage to hair type, proteins and color to the radiation wavelength are missing. We studied the effect of UV plus visible, UVA plus visible, visible mercury-vapor lamp radiation and sunlight on (blended) virgin dark-brown, blond and red hair and (one head) virgin black and curly dark-brown hair. All hair types showed a substantial increase in protein loss in water after lamp and sun irradiation. The damaging effect of UVB was about 2-5 times higher than that of UVA plus visible radiation, depending on the hair type. Significant color changes were also observed in every hair type, after lamp and sun irradiation, being more pronounced for the light colored hairs. The luminosity difference parameter was the major contributor to the hair color changes, but significant changes in the red-green and yellow-blue parameters of every hair were observed. In this case, the damaging effect is ascribable mainly to UVA radiation. No significant changes in the mechanical properties or topography were observed in any case. We discuss these results in terms of hair type and composition and melanin types. (C) 2004 Elsevier B.V. All rights reserved.
dc.description74
dc.description41700
dc.description109
dc.description117
dc.languageen
dc.publisherElsevier Science Sa
dc.publisherLausanne
dc.publisherSuíça
dc.relationJournal Of Photochemistry And Photobiology B-biology
dc.relationJ. Photochem. Photobiol. B-Biol.
dc.rightsfechado
dc.rightshttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dc.sourceWeb of Science
dc.subjectphotodegradation
dc.subjecthuman hair
dc.subjectUV-light
dc.subjecthair color
dc.subjecthair properties
dc.subjectPhotochemical Alterations
dc.subjectMelanin
dc.subjectSpectrophotometry
dc.subjectPhotodegradation
dc.subjectIrradiation
dc.subjectEumelanin
dc.subjectLowry
dc.titleHair color changes and protein damage caused by ultraviolet radiation
dc.typeArtículos de revistas


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