Sun burn is a form of radiation which affect living tissues that results from over exposure of ultraviolet radiation. Eg: sun Common symptoms: reddish skin, hot to touch, pain, mild dizziness. Suntan: Exposure of skin to lesser amount of UV radiation. UV-B is band which causes sunburn. It also initiates the production of melanin in the skin. UV-B also have minor effect on skin damage and penetrate deeper into the skin. The intensity of UV-A radiation is more constant than UV-B without variations during the day throughout the year. Both UV-A and UV-B can cause skin damage and wrinkles, collagen breakdown, formation of free radicals. Sun protection factor (SPF): A sunscreen’s efficacy has been measured by it’s sun protection factor (SPF). The sun protection factor (SPF). The sun protection factor is a measure of the effectiveness of a sunscreen product. In simple terms, the SPF of a product is the number of ...
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