Moisturize the Air
Saline solution can treat both a runny nose and itchy eyes. This solution is bought over the counter in the form of nasal spray, nasal drops or eye drops. It could also be made at home by combining salt with warm water, but homemade saline solution shouldn't be applied in the eyes, in accordance with the improve eyesight Food and Drug Administration.
Dry, hot air can exacerbate a runny nose and itchy eyes. The UMMC suggests adding some essential oils to the humidifier to enhance nasal congestion. Including eucalyptus or peppermint oils.
Improving fluid intake can help thin out mucus drainage, says MedlinePlus. Almost any fluid is valuable, but some teas or warm solutions provides relief of other symptoms including congestion, coughing or sore throat, if these symptoms can be found.