According to WebMD, dry sinuses can be soothed by breathing in steam from the shower or a tea kettle, increasing fluid intake, and nasal irrigation with salt water. Warm compresses applied directly to the face can also help to unblock sinuses and promote moisture within the nasal passages.
Health Magazine explains that humidifiers can also help balance out moisture levels in the home, which in turn can help soothe dry, irritated nasal passages. Humidifiers also help to ease symptoms of the common cold and relieve skin dryness. However, it is important to clean humidifiers on a regular basis to prevent build-up of mold and bacteria that can exacerbate allergy and asthma symptoms.