Effects of solar radiation on hair and photoprotection

Autor(es)

Dario, Michelli F. ^[1] ; Baby, Andre R. ^[1] ; Velasco, Maria Valeria R. ^[1]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Dept Pharm, BR-05508000 Sao Paulo - Brazil

• Tipo de documento: Artigo de Revisão
• Fonte: JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY; v. 153, p. 240-246, DEC 2015.
• Citações Web of Science: 9

Resumo

In this paper the negative effects of solar radiation (ultraviolet, visible and infrared wavelengths) on hair properties like color, mechanical properties, luster, protein content, surface roughness, among others, will be discussed. Despite knowing that radiation damages hair, there are no consensus about the particular effect of each segment of solar radiation on the hair shaft. The hair photoprotection products are primarily targeted to dyed hair, specially auburn pigments, and gray shades. They are usually based on silicones, antioxidants and quaternary chemical UV filters that have more affinity for negatively charged hair surface and present higher efficacy. Unfortunately, there are no regulated parameters, like for skin photoprotection, for efficacy evaluation of hair care products, which makes impossible to compare the results published in the literature. Thus, it is important that researchers make an effort to apply experimental conditions similar to a real level of sun exposure, like dose, irradiance, time, temperature and relative humidity. (C) 2015 Elsevier B.V. All rights reserved. (AU)

• Processo FAPESP: 13/16070-8 - Condicionador nanotecnológico bioativo na proteção capilar à radiação ultravioleta
• Beneficiário: Maria Valeria Robles Velasco
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 13/16265-3 - Desenvolvimento e avaliação da eficácia de nanoemulsão catiônica bioativa na proteção capilar aos danos foto-oxidativos
• Beneficiário: Michelli Ferrera Dario
• Modalidade de apoio: Bolsas no Brasil - Doutorado Direto