Use the aroma diffuser well to prevent diseases Air humidity and health Effect of dry air on human body People can easily distinguish the cold and heat of their environment, but the air humidity cannot be clearly perceived. We can't give immediate feedback on the water content of the air we breathe into our lungs or in contact with our skin and body. However, air humidity will have a significant impact on us. If we are in extreme environment for a long time, it may cause damage. Dry air draws water from any source it comes into contact with, including our bodies. Water can evaporate from our eyes, skin, hair, nails and any other body surface. This dehydration may initially cause discomfort, such as eye soreness or contact lens irritation, but it may also lead to more serious symptoms