One definition of dry air is a theoretical sample of air that has no water vapor. When the relative humidity drops below about 40% the air feels dry to skin. If very low relative humidities persist it can make the skin dry, lips chapped and can put more static in the air.
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One definition of dry air is a theoretical sample of air that has no water vapor. When the relative humidity drops below about 40% the air feels dry to skin. If very low relative humidities persist it can make the skin dry, lips chapped and can put more static in the air.
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