Friday, August 27, 2021

How does environmental pollution affect the Skin?

 



The increase pollution of air over the years has important effects on the skin of human. The skin is exposed to environmental air and ultraviolet radiation (UVR) pollutants such as aromatic polycyclic hydrocarbons (PAHs), volatile organic compounds (VOCs), ozone (O3), oxides, particulate matter (PM), and smoke of cigarette. Again skinof human acts as a biological shield against physical air pollutants and  pro-oxidative chemicals, the  prolonged  exposure to more levels of these pollutants may have intense effects on the skin which are negative. Exposure of the skin to pollutants of air has been combined  with allergic skin or inflammatory and skin aging conditions such as eczema, atopic dermatitis, psoriasis or acne, while skin cancer is among the most serious effects. On the another hand, few of the air pollutants (i.e., nitrogen dioxide, O3,   and sulfur dioxide) and spread particulates (clouds and soot) in the troposphere reduce the effects of wavelength is shorter  UVR and  important reductions in UV irradiance have been observed in polluted urban areas.

Major air pollutants with effects on the skin include the solar PAHs, UVR, VOCs, PM, O3, NOx, and cigarette smoke. Significant effects moderate by air pollutants on the human skin may contribute to skin aging, skin cancer, psoriasis, atopic dermatitis, and acne.

Oxides have been combining with increasing   dermatitis of atopic as well as increasing of the disease in children. VOCs, and due to NOx, the formation of photochemical oxidant products -mainly O3- at ground level, also known as photochemical   summer smog. No protection to O3 has been associated with urticarial, eczema, contact dermatitis, and other not specific explosion. Exposure to PM donates to external skin aging (pigmented macules, wrinkles, or spots). Cigarette smoking has been associated with skin aging (wrinkles, skin dryness, skin dyschromias), and the combination of smoking and sun exposure may have a collective effect on skin aging. Moreover, it has been associated with skin cancer (SCC, BCC), vulgaris and acne psoriasis.

Air pollution, UV rays, and blue light, can cause fine   lines sagging, wrinkles, and dark spots. “All these factors of environmental work by creating oxidative damage in the skin, which breaks down collagen and to damage the barrier function of the skin.


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