RT Book, Section A1 Pollock, Samara E. A1 Kourosh, Arianne S. A2 Nouri, Keyvan SR Print(0) ID 1194723357 T1 Aging Skin T2 Skin Cancer: A Comprehensive Guide YR 2023 FD 2023 PB McGraw-Hill Education PP New York, NY SN 9781260453003 LK dermatology.mhmedical.com/content.aspx?aid=1194723357 RD 2024/04/16 AB SUMMARYSkin aging results from both intrinsic and extrinsic factors, influenced by lifestyle choices, ethnicity, hormones, and environmental exposures.Most extrinsic aging occurs because of chronic radiation exposure from multiple sources, including ultraviolet (UV) light, heat, and visible light, as well as pollution, resulting in visible manifestations of photoaging.Due to the variability in skin between individuals and different ethnicities, different people will show signs of aging at different rates. However, despite these differences, protecting the skin is the best form of prevention.