title: Photodamage determination of human hair.
abstract: Sunlight on human hair causes photo-degradation. This results in bleaching due to melanin oxidation through free radicals, and induces keratin impairment. Protein degradation, tryptophan degradation, lipidic peroxidation and electron paramagnetic resonance can be used to evaluate proteic and lipidic photodecomposition and free radical formation in hair fibres subjected to antioxidant action and different UV intensities. All these methodologies have been optimised to determine protein, lipid and melanin degradation in hair subjected to different UV intensities.
authors: Department of Chemical and Surfactants Technology, Institute of Advanced Chemistry of Catalonia IQAC-CSIC, Barcelona, Spain. efptqt@cid.csic.es
authors: Estibalitz
authors: E
authors: Fernández
authors: Clara
authors: C
authors: Barba
authors: Cristina
authors: C
authors: Alonso
authors: Meritxell
authors: M
authors: Martí
authors: José Luis
authors: JL
authors: Parra
authors: Luisa
authors: L
authors: Coderch
mesh_terms: D004578:Electron Spin Resonance Spectroscopy; D005609:Free Radicals / Q000737:chemistry; D006197:Hair / Q000528:radiation effects*; D006801:Humans; D015227:Lipid Peroxidation; D008543:Melanins / Q000737:chemistry / Q000378:metabolism; D010084:Oxidation-Reduction; D010782:Photolysis; D011506:Proteins / Q000737:chemistry / Q000378:metabolism; D014364:Tryptophan / Q000737:chemistry / Q000378:metabolism; D014466:Ultraviolet Rays
chemical_list: D005609:Free Radicals; D008543:Melanins; D011506:Proteins; D014364:Tryptophan