cracked chapped epidermis
Large quantities of vitamin C are essential for maintaining the health of the epidermis, the outermost layer of skin. Vitamin C protects the epidermis from oxidative damage caused by exposure to the sun and pollutants such as ozone and cigarette smoke. A deficiency in vitamin C can cause skin injury and dryness, as well as several other factors, so it can be useful for indicating vitamin C deficiency alone.
