RT Book, Section 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. SR Print(0) ID 1161345949 T1 Photoprotection T2 Fitzpatrick's Dermatology, 9e YR 2019 FD 2019 PB McGraw-Hill Education PP New York, NY SN 9780071837798 LK accessmedicine.mhmedical.com/content.aspx?aid=1161345949 RD 2024/10/12 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.