The sun presents a great conundrum for dermatologists and skin care professionals. On the one hand, it is the life-giving source of all natural living things. On the other hand, UV exposure is the cause of premature aging and, even worse, skin cancer.
It was once believed that only UVB was damaging because it causes the epidermis to burn and turn red. But now we know that UVA is equally damaging, if not more dangerous. UVA rays account for up to...
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