Rosacea Skin Care - Rosacea Sun Safety
Rosacea-Ltd examines Sun Rays
Proper rosacea skin care involves an understanding of the factors that affect rosacea. The sun and ultraviolet radiation are among those factors.
UVA rays constitute 90-95% of the ultraviolet light reaching the earth. They have a relatively long wavelength (320-400 nm) and are not absorbed by the ozone layer. UVA light penetrates the furthest into the skin and is involved in the initial stages of suntanning. UVA tends to suppress the immune function and is implicated in premature aging of the skin.
UVB rays are partially absorbed by the ozone layer and have a medium wavelength (290-320 nm). They do not penetrate the skin as far as the UVA rays do and are the primary cause of sunburn. They are also responsible for most of the tissue damage which results in wrinkles and aging of the skin and are implicated in cataract formation.
UVC rays have the shortest wavelength (below 290 nm) and are almost totally absorbed by the ozone layer. As the ozone layer thins UVC rays may begin to contribute to sun burning and premature aging of the skin.
All forms of ultraviolet radiation are believed to contribute to the development of skin cancer, and likewise cause havoc for the rosacea sufferer.
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