Background/Purpose: The skin protects against external factors and this skin\nfunction can be affected by environmental conditions, including low temperature,\nlow humidity, and high altitude. Therefore, it is important to study the\nrelationship between the environment and the skin. The purpose of this study\nis to determine how the skin barrier functions change at low temperatures.\nMethods: This study was performed at a Korean ski resort on January 2015\nand evaluated 10 subjects skin condition during skiing. Skin properties were\nexamined at 2 sites (cheeks and dorsal hands) and four time points (indoor;\nbaseline, outdoor; after first skiing and after second skiing, indoor; after taking\na shower). Results: The skin hydration on the cheek decreased after the\nsecond skiing session and the erythema decreased only after the first skiing\nwhile this value on dorsal hand was not changed by skiing. The brightness and\nyellowness of cheek skin increased and redness decreased therefore, skin color\nbecame pale during skiing. The extensibility of cheeks and dorsal hands decreased\nafter skiing. We found positive correlation between skin temperature\nand redness (r 2 = 0.707, p < 0.000). Also the skin properties changed according\nto ambient temperature. The cheek skin temperature, erythema, redness\nand extensibility increased when people moved from outdoor to indoor while\nskin brightness and yellowness decreased. The skin hydration on both cheeks\nand dorsal hands and the skin properties except skin temperature of dorsal\nhands didn�t change significantly. Conclusions: Low temperatures can affect\nhuman skin color so that the skin color becomes pale because capillary blood\nvessels shrink when skin is exposed to cold environment. The cheek skin\ntends to change easily than dorsal hand during ambient temperature change.
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