TY - CHAP M1 - Book, Section TI - Photoprotection A1 - Chung, Jin Ho A2 - Kang, Sewon A2 - Amagai, Masayuki A2 - Bruckner, Anna L. A2 - Enk, Alexander H. A2 - Margolis, David J. A2 - McMichael, Amy J. A2 - Orringer, Jeffrey S. PY - 2019 T2 - Fitzpatrick's Dermatology, 9e AB - AT-A-GLANCEPhotoprotection measures include seeking shade during the peak ultraviolet (UV) B hours of 10:00 AM to 2:00 PM and the use of high sun protection factor (SPF) broad spectrum sunscreen, clothing, wide-brimmed hat, and sunglasses.UV induces skin aging and skin cancer, but using sunscreen may slow down skin aging and reduce the risk of developing skin cancer.Photoprotection in children is essential and its importance should be taught from childhood.Although oral photoprotection cannot substitute for topical sunscreen, it may serve as a secondary measure to prevent skin damage from solar radiation.UV protection factor is a UV protection rating for fabrics. Several chemical treatments can increase a fabric’s natural UV protection factor.Many types of glass have very good UVA2 and UVA1 protection (up to 380 nm).Sunglass standards, mandatory in Australia and voluntary in the United States, specify a maximum percentage of light allowed to be transmitted and a minimum vertical dimension of sunglasses. SN - PB - McGraw-Hill Education CY - New York, NY Y2 - 2024/10/13 UR - accessmedicine.mhmedical.com/content.aspx?aid=1161345949 ER -