nouvelles-1 — Pollution

Human skin is exposed daily to various environmental factors, including air pollutants and ultraviolet (UV) light. Air pollution is recognized as a significant environmental risk to human skin, promoting aging and inflammation that lead to skin disorders, wrinkles, and pigmentation issues. Moreover, components of air pollution can synergize with UV light, amplifying skin damage. Despite this, the role of air pollution in modulating cellular senescence in skin cells and its contribution to skin aging remains poorly understood. This review summarizes the current knowledge on air pollution components, their role in cellular senescence and skin aging, and the therapeutic and cosmetic...

The increase in air pollution over the years has significantly impacted human skin. The skin is exposed to ultraviolet radiation (UVR) and environmental air pollutants such as polycyclic aromatic hydrocarbons (PAHs), volatile organic compounds (VOCs), oxides, particulate matter (PM), ozone (O₃), and cigarette smoke. Although human skin functions as a biological shield against pro-oxidative chemical and physical air pollutants, prolonged or repetitive exposure to high levels of these pollutants can have profound negative effects. Such exposure has been linked to skin aging, as well as inflammatory and allergic skin conditions, including atopic dermatitis, eczema, psoriasis, and acne. Among the most...