Vitamin C Protect skin
Vitamin C is a normal skin constituent that is found at
high levels in both the dermis and epidermis. The vitamin C content of the
epidermis is higher than the dermis, although the vitamin C concentrations in
both layers are approximately equal to that of other water-soluble
antioxidants, including uric acid and glutathione. Aging, however, causes a
decline in vitamin C content in both the epidermis and dermis. Excessive
exposures to UV light or pollutants (e.g., cigarette smoke and ozone) may also
lower vitamin C content, primarily in the epidermis.
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