How to Protect Skin
Posted on August 31st, 2009 | by Admin |How to Protect Skin
UV Rays
The sun is one of the key enemies of the skin. Although sunlight helps the skin synthesize vitamin D (cholecalciferol), excessive and prolonged exposure to the sun causes damage and wrinkling. (Here’s where you can find more detailed information on best skin care products.)
How does the sun cause such damage?
Sunlight that passes through earth is composed of visible light and ultraviolet light (UV). UVA and UVB Light are one of the most common ultraviolet lights. UV lights falls outside the visible light spectrum, meaning, the human eye cannot see this type of light and can only be seen using a sophisticated tool which detects different light wavelength across the light spectrum.
The difference between the two UV light lies in their ability to damage skin cells. UVB light doesn’t get through the deeper layer of the skin and accounts for visible burns and DNA damage across the top layer of the skin. (Here’s where you can find more detailed information on skin care and skin lightening.)
UVA light, on the other hand, penetrates through the deeper layer of the skin and activates free radicals (very reactive substances), which cause small damages to the skin. Cumulative damage accounts for the skin’s premature aging.
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